Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

30 hour wait for recovery. Lessons learnt.

This site may earn commission on affiliate links.
My Model 3 broke down on Thursday evening. The dreaded 12v failure.
Indications were messages like "Vehicle may not restart","Electrical system is unable to support all features" followed shortly afterwards by red warnings to pull over as the vehicle was about to shut down, which it did.
The good news was that this all happened whilst the vehicle was safely stopped at Amesbury superchargers. I had plugged the car in and after 3 minutes or so the charging stopped. I thought it was a faulty charging stall and so I unplugged and only noticed the real problem when the car wouldn't engage drive.
Bizarrely, just before the car went to sleep the windows started to open. I managed to close all bar one before power died completely. The window that remained open was fortunately on the lee side of the weather.

FD33553E-E293-475A-811E-68F63959EBC8.jpeg


I phoned Tesla.
The call centre is in the Netherlands but they quickly saw from the telemetry data they had received before the car went to sleep that it was a recovery situation. They arranged for a hire car to be sent to me and arranged for the car to be recovered. Brilliant. OK so I had to hold for about 10 minutes initially to get through but that was it.
Since lockdown I have a routine of reading a bedtime story to the grandchildren via FaceTime and so I cancel that. I'm sure I missed it more than they did.
The hire car from Enterprise was with me within 90 minutes. I needed my driving licence and a credit card (£1 refunded charge) to get the hire car. I pondered all the occasions that I had previously left the house with neither in my possesion especially since I could pay for anything with Apple Pay on my Apple watch. Luckily I had my wallet which I seldom need to use nowadays with me. Although I was suitably dressed for the conditions the hire car meant I could now sit and wait for the recovery in the warm. A Vauxhall Corsa is not particularly comfortable but it has a good heater and Apple Car Play is a great feature.

Having read about this type of breakdown on this forum a couple of years ago I had bought a battery booster power bank (which includes a torch) and carried it in the car (although I hadn't checked its state of charge since last summer, it was thankfully indicating that it was still fully charged) I opened the round port on the front bumper and connected the booster which successfully popped the frunk. I then connected the booster to the 12v battery and, nothing happened. I must have repeated the connection about 10 times but still nothing. I'm not an electrical guru but clearly there will be wiggly amp explanation for this. @arg ??. I was hoping I could at least close the damned window and secure the car, but I couldn't.
An hour or so later the first truck arrives on the scene, lots of flashing lights and grubby DayGlo clothing, and it was a welcome sight but it soon became apparent that 'these new fangled electric cars' were not something the driver had any knowledge of and so we would wait for his buddy to turn up. The second wagon arrived, more flashing yellow lights and loads more DayGlo clothing and head torches. The driver of this wagon had 'done hundreds of these' and had brought an entourage to pass on his knowledge and wisdom. He explained to his audience how to pop the bonnet using a 12v booster and where to find the 12v battery. 'Is that the battery?' one of his apprentices asked pointing to the 12v battery, imagining that it was the sole power source for the entire car. His battery booster did however produce a satisfying clunk as the car seemed to re-energise and come back to life. The screen came on and I was also able to close the offending window. He proudly demonstrated how to get it in to TOW Mode once he had got round to finding the option on the new V11 menus, except that it wouldn't work. The selection was greyed out. No matter how hard he stood on the brake it wouldn't engage.
Despite two recovery vehicles being on scene they could only muster 2 skates to winch the car on to the low loader.
"We'll give it a go" was not a solution as far as I was concerned.
"I'll jack up the front to check if the front wheels are locked." I understood the logic but I pointed out to his audience the risk of damage to the main battery through careless jacking and produced a puck to show what was required to guarantee a safe lift. I showed the jacking instructions in the breakdown booklet and the expanse of red areas. The booklet was in the glovebox and I had managed to find out how to open the glovebox on the new screen menus before the car shutdown to get the Tesla breakdown phone number. Damn those software updates.
I had assumed they carried self-jacking skates but I suspect they actually only had the cheap ones that required the car to be jacked because recovery man no 1 expressed his concern about not having the correct kit and how it might be better to come back in the morning with all the required kit. If there is any doubt there is no doubt to my mind and I agreed and encouraged this plan of action. I would go home and they could return in the morning and finish the job.
I was a little uneasy that recovery man no 2 had not completely bought in to that option and I suspected that as soon as I was out of sight they would return and jack and winch and drag to their hearts content. I had to wait until they departed in any case as they had blocked the Corsa in. As I drove off I saw them watch me depart from the nearby garage forecourt. I went round the block and returned to the Tesla. The windows were down again! Once again I managed to get all bar one back up. The drivers door would not shut properly either. I decided to sit and wait in the warm Corsa for their return in the morning. I let Tesla know the plan (or more truthfully how unimpressed I was that they had sent such a poorly equipped and dodgy recovery company out to me and that I was now sitting guarding the insecure vehicle overnight).

4496D9F1-A58E-48FA-BA2D-7E5F48B52126.jpeg


I sat in the warm listening to an audio book that had remained unfinished for months as the Tesla iced up overnight.
Next morning dawned slowly. I can't remember the last time I had a breakfast at McDonalds but apparently they don't do a 'big breakfast' anymore, who knew? The coffee was OK though. The Apple watch battery had gone flat during the night and I don't carry a charger for it. I pay using my phone.
At 8am I called Tesla for an ETA. They rang me back at 9 to say the recovery company will contact me.
No they didn't.
I ring around cancelling this morning's engagements. A 2 minute job if I'm honest.
At 12:30 that audio book finally finished. Time to call Tesla again. This time I insisted that a new recovery contractor be appointed. Tesla fully understand and agree to set about finding an alternative.
I ring and cancel the dental appointment set for this afternoon. They aren't very happy and talk about charging me for the late cancellation. I explain I have broken down and I just know they don't believe me. New appointment made in April. April!
I start ringing around local recovery firms. It quickly became apparent that as soon as you mention Tesla they suddenly become unavailable. A chat with one chap revealed that he didn't have the special gloves and boots required for electric car recoveries. (!) One quoted £750 but it would be tomorrow.
Meanwhile Tesla had appointed a new firm to manage the recovery. This firm promptly called me and it soon became apparent that all they did was look at a map and appoint a local contractor who was ...... yup, none other than, the original outfit, Firm X. I declined that option.
I realised my travel insurance included RAC vehicle recovery and so I called them.
Not so fast grasshopper. This is 2022 and so you don't call them but log your breakdown online. Who knew? They SMS you the link after pressing option 1.
Filling in the form takes about 3 minutes and then you press send and then, ... well, nothing happened... They say you should receive a text and so, since I didn't get one, I go through the process again, and again and once more for luck. I download the app. It has the same form and the same result. I ring my wife to log the breakdown from the home computer and once again nothing happens. I ring the RAC. Eventually I am asked by the system whether this is about a previously reported breakdown, and I foolishly decide it is. And now comes the entertaining part because it asks you to say the registration of the vehicle.
The voice recognition results are so bad, so appallingly bad, it is frankly hilarious. I tried BBC english, NATO phonetics, a Scottish accent, and other accents that are not particularly PC. It eventually kicks you off the system and you have to start all over again. So unless you are Jeremy Clarkson and want to make a hilarious 30 minute TV programme about it, I recommend never to try this option. I later discover that if your breakdown has been properly logged it will recognise your phone number and so you don't actually have to endure this comic procedure. Anyway, I also eventually discover that if you hang on and on (and on) and select the vulnerable person option eventually you will speak to a helpful and charming human who will log all your details in the good old traditional manner. The phone is meanwhile pleasantly pinging away in the background with reassuring SMS confirmations. I take the opportunity to specifically mention to them that I would prefer an RAC badged recovery rather than a contractor but if a contractor is appointed it must not be Firm X. No problem, 'we shall keep you updated'. That wasn't quite true....
I call the local Tesla Service centre where the car will be recovered to. They are expecting me and have a Tesla loaner already allocated. They apparently close at 6 for the weekend but I would need to be there by 4:30 to get the loaner.
The hope of the car arriving there today slowly, but surely, fades as it grows dark again.
Around 5pm I get a phone call from Firm X who have now been told by Tesla that they are no longer required. That's 5pm the next day. I reminded them that they promised to be here first thing this morning. I had given my Tesla keycard to them the previous night when the plan was they would recover the car without me being there and they now to wanted to return the keycard. I said put it in the post but they wanted to hand it over personally. I told them I was in exactly the same place where they had effectively abandoned the car last night and that I had asked Tesla to cancel their participation because of their sub-optimal performance. I then discover they had now been appointed by the RAC to do the job! We mutually agree to cancel that.
Storytime for tonight is cancelled. 2 nights in a row missed. That hasn't happened before.
Back on to the RAC again thankfully without voice recognition being required and eventually speak to a human who apologises and promises to appoint someone else.
I get called by a Bournemouth based contractor who wasn't told it would be a 4 skate job and so can't do it.
Back to the RAC again.
I then get called by a contractor in Durham who says they will do the job on Monday. Durham. I'm in Hampshire. Monday? No thanks.
Back to the RAC again.
I'm giving up hope here. It's dark again and I'm not sure I can face another audio book, or a McDonalds. I keep Tesla in the loop and they say if I'm unsuccessful they will try again to resolve the situation, somehow.
At about 11pm I'm called by the RAC Specialist Intervention Team. These folk are the A team. They text you a direct dial phone number and are on your case.
Within 10 minutes I'm called by a contractor who knows who I am, where I am, what the car is and what needs to be done and will be with me within an hour.
About 10 minutes after that the Specialist Intervention Team call me to ask if I have heard from their contractor - genuine concern and a follow-up, I'm impressed.
This is what the RAC service should have been like 7 hours earlier!
The recovery wagon arrives. Yellow fashing lights and clean DayGlo clothing. This guy knows what he is doing and explains that he will wait for a colleague to turn up and they will do a 4 skate recovery. He also says that he will make sure the car is left inside the workshop at their yard until Monday when it will be moved to the Tesla Service centre. I'm quite happy to leave this guy to get on with the job. He turns out to be ex-Army and it shows.
Home 30 hours later. On the way I update Tesla.
To bed, to sleep, per chance to dream....

During my stay at Amesbury, quite a few people noticed the open window but only two of them actually bothered to investigate further. Thank you ladies.
I chatted with several people who were charging there that had tracked their car's journey from Fremont and China on this forum! Mr Miserable was not how they imagined! I take this as a compliment to my youthful dashing appearance rather than any alternative.
Only one young chap knew about the 12v failure and knew how to then pop the frunk.
During the 30 hours I estimate only about 80 cars visited the chargers and the busiest time was between 3 and 7pm. I would say about 50%- 60% were splash and dash and 15-20% were charge to 100%. Model S/X seemed to take forever.
I'm astonished at the speed some folk think is acceptable to drive at in a car park.
The chargers were also visited unsuccessfully by a brand new Hyundai Ioniq and a Model S without a V3 adaptor. A Polestar had a quick look as did an old Renault Zoe.
Litter at the site is a problem.
I saw that MIC Model 3's often produce steam from the front offside wheel arch when charging. I've not noticed this behaviour before but saw several new cars do it.

914E462B-9184-4B63-84FB-A69E091BA2B3.jpeg


Lesson 1: Keep your phone charged or better still keep a charged USB power bank in your car incuding a charging cable (the hire car will probably not have wireless charging). Calling Tesla or the RAC requires long phone calls, most of it waiting on hold
Lesson 2: Keep warm clothing including a hat, in the car (or in the frunk). A headtorch I kept in the frunk was very useful despite the area being reasonably well lit.
Lesson 3: Keep a 12v booster battery in the car so you can access the frunk. Most can also be used as a USB powerbank for your phone. I thought it would provide 12v power to the car as well but I was disappointed to find it didn't.
Lesson 4: Don't totally rely on Tesla to recover you - they just use local contractors who may or may not be any good or able to arrive promptly. Membership of AA/RAC gives you options. You may already have such a membership as part of an annual travel insurance package.
Lesson 5: It's not such a burden to carry a slim wallet containing a credit card, driving licence and Tesla keycard, at the very least, with you always. Put your phone number in your wallet (lesson learnt from a previous experience).
Lesson 6: Don't expect a quick response. I was in not in a remote area. I had good 4G mobile coverage. It wasn't a weekend or Bank holiday. I was parked in a safe place with excellent facilities nearby. The Holiday Inn was great with decent coffee and food, albeit a little pricey but with a 10% discount for Tesla owners. The weather was OK, cold and wet and then icy, but it wasn't snowing or anything severe.
Lesson 7: Carry jacking pucks. Prevention is better than cure.
Lesson 8: Try and keep dental appointments if at all possible. There is a large backlog at the moment.
Lesson 9: If you've not had a McDonalds recently you are not missing anything.
Lesson 10: I'm not sold on audio books but they did help pass the time.

Today is Saturday, the car is still not at the service centre and won't arrive there until Monday. The story is not yet over but fingers crossed ....
 
Last edited by a moderator:
I am actually kinda surprised Mr M did not have plastic and duct tape in the car already. I thought he would have it stored in the frunk with his shovel and cable ties ;)

Maybe you missed the fact that the OP was able to acquire a rental car which he allegedly had to park next to the disabled car to reportedly prevent rain from going in the window. My suggestion was that stopping to pick up some tape and plastic would probably be more effective than parking the rental car upwind.
 
Maybe you missed the fact that the OP was able to acquire a rental car which he allegedly had to park next to the disabled car to reportedly prevent rain from going in the window. My suggestion was that stopping to pick up some tape and plastic would probably be more effective than parking the rental car upwind.
Maybe asking one of the two dismissed recovery crews would have been simpler.
 
I suspect that he was just using military training to come up with a solution using the kit that was readily to hand. It must have been effective as I've not read any reference to having to subsequently dry out the inside of the car. I guess its one of those things that unless you were there at the time, other than those posted, the exact circumstances leading to the choice of actions are unknown.
 
I am actually kinda surprised Mr M did not have plastic and duct tape in the car already. I thought he would have it stored in the frunk with his shovel and cable ties ;)
Maybe you missed the fact that the OP was able to acquire a rental car which he allegedly had to park next to the disabled car to reportedly prevent rain from going in the window. My suggestion was that stopping to pick up some tape and plastic would probably be more effective than parking the rental car upwind.
Nope.
I make it a rule to read the original post if not the whole thread where practical before making a joke that implies the Op is a serial killer.
 
Nope.
I make it a rule to read the original post if not the whole thread where practical before making a joke that implies the Op is a serial killer.
@Exy1 @StealthP3D. I honestly don't get it?
What is it exactly that you disagree with in my post?
If the Op wasn't offended ( he liked the original post) why does it bother you guys so much?
I am all for standing up for minorities but I think the serial killer community can probably hold their own just fine.
 
This thread has caused me to review my safety kit in the car so that is a good thing. Here are a couple of improvements I'm going to make:

  1. Up to now, I have carried a small 9v cell in the fanny pack I carry so that I can open the frunk even if the car's 12v is dead. Now that I plan to leave the pouch at home, the 9v has to be on the car and accessible from the outside. I'm going to place one in the tow cubby hole and replace it periodically.
  2. I need to know of a 'passable' 12v replacement I can buy at many shops. This business of getting the car towed to a Tesla service center for a 12v replacement is for the birds. My upcoming Model Y may have an LFP 12v, so that will be a different story.
As an aside, this business of waiting for the 12v to die is best avoided. I'm happy to buy an earlier(er) 12v replacement to avoid drama, so I don't expect to ever be forced to play this game of swapping out a 12v on a dead car. But I like having a plan 'B.'

I was under the (apparently wrong) impression that the emergency 12v batteries can start a Tesla with a dead 12v. I'm sorry to hear this is a ymmv, and would like to hear of any products that can fill this task. It sounds like a matter of having enough current but I am not sure. Experts, please weigh in.
It's not such a good idea in a country where the rain falls sideways.
Can you tell me any electrical reason why the booster pack wouldn't kick the car back to life?
Jump packs are designed to jump start a battery until you start the engine and get the alternator going (or in the Tesla's case, you jump start the computers and contactors and get the DC to DC converter going). The portable lithium iron phosphate ones usually only output power to the 12v battery for a short while, and then turn off (could be after a minute or two). If your 12v battery is really low, that minute or two is not enough to charge it high enough with the limited output of the jump pack. You may have to keep re-enabling the jump pack multiple times, or put it in "boost" or "bypass" mode to maintain it's output continuously (it will still cut the output if it gets too hot). Recovery operators will usually have jump packs that are larger or have higher capacities and outputs in order to be useful many times a day and with bigger vehicles that require more current. Their jump packs will usually not take as long to jump start or charge up a low 12v battery.

Another point to make is that some jump packs have reverse polarity protection to keep it from outputting anything if you connect the leads to the 12v battery in reverse. The way this works is that they don't output anything until you connect the clamps to the 12v battery and they detect a voltage from it, in order to know that they are correct. This voltage is usually something like 5V, in order to work for the majority of "low" 12v batteries, but will not work with extremely low batteries that have a lower voltage than that. If the 12v battery has multiple shorted cells, then it could be lower than the cutoff for the jump pack unless it has (and you know how to turn on) a bypass mode.

Also, you can find a replacement 12v battery anywhere that sells car batteries, because it's the same as what is used by many models of Hondas (A group size 51R battery).
 
Last edited:
This is the point where we would deviate, I would have gone home and left it for Tesla to solve. Given the car was clearly immovable I'm not really sure what risk you thought was going to happen with it. Similarly if the recovery company damaged stuff then that would all be on Tesla.

Does anyone know what Tow mode actually does, is there a physical disconnection to the motor? Anyway I'm somewhat skeptical as to how much damage will really be done by pulling a Tesla onto a truck with the motor turning if it's in drive, isn't that what regen down a big hill does, and there was the video of a chap tow - charging I remember.

It is interesting that RAC eventually found a perfectly competent recovery company that was clearly not far away, might be worth sharing their details with Tesla for use in the future.
Tow Mode powers the two small electric motors at the rear brake calipers to disable the parking brakes. This allows it to roll freely and be pushed, or winched onto a flatbed. Tow Mode allows the car to roll slowly for a certain distance and time period, and will automatically re-engage the parking brakes if it rolls too fast (I think it's 5 MPH).

Liquidv said:
So let me get this right, charging our Tesla from the wall isn't going to charge the 12v battery?
The Tesla charges the 12v battery any time it's awake. It doesn't matter if it is charging or not, if you are driving it or not, if you are in the car or not. And if you let it sit for a while, it periodically wakes up by itself to top up the battery.
 
Last edited:
And although it should last longer, between temperature and possible Tesla warranty concerns.... and still no health monitoring, I'm not sure it would be a net improvement.

Does anyone have the the capacities for standard fit Tesla batteries? Ah and at what rate and probably CCA or equivalent high current rating.
I am actually quite surprised that Tesla uses just 45 Ah battery. It is on very low side.
If you can find same size but 60 Ah it would give you 30% bigger battery.

all ICE Petrols are on like 60, and diesels on even higher.
Here are the specs as listed on the manufacturer's catalogs (1st one is from the North American one, and 2nd one is from the rest of world one). The battery is a Group Size 51R, same as used in many Hondas. It may or may not be AGM, since the type number does not include "AGM" in it like some of the other in the catalog. The Model 3 owner's manual states that the 12v battery should be at least 33 Ah capacity, even though the OEM one is higher at 45 Ah.

12v Battery Specs 1.jpg

12v Battery Specs 2.jpg


By the way, I installed a shunt on my Model 3's 12v battery to monitor the voltage and current and depth of discharge on it this summer. It is never discharged below 95% of it's full capacity before the car wakes up to charge it again. Not sure if that's the normal charging behavior for all cars, or if it's more protective of mine because it's almost 4 years old and has 72,600 miles on it.
 
By the way, I installed a shunt on my Model 3's 12v battery to monitor the voltage and current and depth of discharge on it this summer. It is never discharged below 95% of it's full capacity before the car wakes up to charge it again.
What sort of load is on the 12v battery with the high voltage contactor open (ie with a dead car but needing essential systems powered to open doors and enable tow mode)?
 
If your 12v battery is really low, that minute or two is not enough to charge it high enough with the limited output of the jump pack.

If the 12v battery has multiple shorted cells,

Tesla charges the 12v battery any time it's awake. It doesn't matter if it is charging or not, if you are driving it or not,
Given that @Mr Miserable 's car was in use moments before the fault struck, and that the battery is reported to have measured at 11.7v (very low for 'recently charged if needed’) something doesn't make sense.

The recovery co’s booster worked but didn't resolve (even temporarily) the low 12v enough for the DC to DC converter to kick in and overcome a weak 12v battery

11.7v is not a ’dead battery', and 12v must have been ok sometime recently prior to failure. Battery could be high resistance, but then OP’s booster should have got a better result.

Sounds like some issue must have been stopping the 12v from being charged and then a final failure triggered the breakdown. A fully charged 12v 40Ah battery should run ancillary gear for longer than a few minutes.
 
  • Like
Reactions: android04
What sort of load is on the 12v battery with the high voltage contactor open (ie with a dead car but needing essential systems powered to open doors and enable tow mode)?
I don't KNOW for sure what max load a TESLA puts on the 12v without support from the dc-dc converter, or how intelligently loads are managed.

I would expect that hazard lights, internal lights and MCU electronics to all be capable of being powered by just 12v battery, and of course the HV contactor and associated electronics.

High power / LV electronics that need water cooling and recirc pumps that only need to function when the car is fully powered up ready to drive presumably do not need to be powered by 12v battery unaided.

I would guess transient peaks of a few 10’s of amps / a few hundred watts would be the maximum needed to 'boot' the car and start the dc-dc converter.

The non Tesla EVs I have swapped 12v batteries on only create a tiny spark on reconnecting the 12v battery and one car with a very week 12v would boot up (start) and drive fine with no more than momentary connection of a small (7Ah) 12v gel battery. In this particular case the car's battery was so bad that the car wouldn't restart without using the booster if switched off.
 
@Exy1 @StealthP3D. I honestly don't get it?
What is it exactly that you disagree with in my post?
If the Op wasn't offended ( he liked the original post) why does it bother you guys so much?
I am all for standing up for minorities but I think the serial killer community can probably hold their own just fine.
It was just an emoji it's not like I've accused you of dogging at SC's.

Of course @StealthP3D may feel differently.
 
  • Funny
Reactions: Js1977
Given that @Mr Miserable 's car was in use moments before the fault struck, and that the battery is reported to have measured at 11.7v (very low for 'recently charged if needed’) something doesn't make sense.

The recovery co’s booster worked but didn't resolve (even temporarily) the low 12v enough for the DC to DC converter to kick in and overcome a weak 12v battery

11.7v is not a ’dead battery', and 12v must have been ok sometime recently prior to failure. Battery could be high resistance, but then OP’s booster should have got a better result.

Sounds like some issue must have been stopping the 12v from being charged and then a final failure triggered the breakdown. A fully charged 12v 40Ah battery should run ancillary gear for longer than a few minutes.
I agree that the 12v battery is not likely the cause of the failure, but a victim of some other failure. As long as the car is "awake", a weak 12v battery would not bring it down. One with multiple shorted cells could, because it could cause the DC to DC converter to turn itself off if senses too much current going to it. But like you pointed out, a battery reading 11.7v does not likely have any shorted cells.
 
  • Like
Reactions: navguy12
What sort of load is on the 12v battery with the high voltage contactor open (ie with a dead car but needing essential systems powered to open doors and enable tow mode)?
If the car is asleep and you don't have Sentry Mode on (nor anything else that can draw power), it drains around 120mA from the 12V battery.

Edit: that 120mA number was from last fall when I last checked the usage in the scenario you asked about. I just went out to check my car in the garage and it's even lower at around 33mA. It's in a cold 39°F garage, finished charging the main battery 4 hours ago, no Sentry Mode or other things that will draw power. So it's pretty much just using a low power mode for the modems and antennas to detect a key or a wake up packet from the Tesla app.
 
Last edited:
I've anecdotally noticed sedentary battery drain to be very much reduced recently. Possibly this changed around 3 months or so ago.

I just checked our drain in TeslaFi as unusually the car had not been touched since last Thursday evening and since then it had indicated that it had precisely 0% nominal (ie not temperature/usable capacity dependent) battery use during that time. A couple of wakeup's during that time, some with slight (1%) adjustments, but they net to 0%. This is unheard of behaviour for us vs previous couple of years behaviour.

All OT though.