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Resolved: GPS + Autopilot + cruise control + cameras not working. Bonus problem: rapid battery drain

Trekker_

Member
Sep 7, 2021
178
46
Mission Viejo, CA
Yes, but generally you had a physical key which could be used to open the doors and trunk to get at the battery for jumping or replacing (last had a BMW 3-series that had the battery in the trunk).

And I know I'm going to regret this statement but, my 3 is just over 3 years old and a bit less than 20,000 miles. So far no signs of a 12V failure (knock on wood).
You can use any 12 volt battery to pop open your frunk to change the battery though. Plus what other car company includes cost of delivery and install in the price of their battery?
 

drtimhill

Active Member
Apr 25, 2019
1,951
2,448
Seattle
Yes, but generally you had a physical key which could be used to open the doors and trunk to get at the battery for jumping or replacing (last had a BMW 3-series that had the battery in the trunk).

And I know I'm going to regret this statement but, my 3 is just over 3 years old and a bit less than 20,000 miles. So far no signs of a 12V failure (knock on wood).
I confess I just had my 12V battery replaced to pro-actively avoid this. Wasn't that expensive and the tech came out to my home and did it in about 20 mins (and also checked out tires and a few other things while he was here). Not a huge $$ investment for a bit of peace of mind .. after all we dont wait for tires to go flat before we replace them...
 

Dolemite

is my name
Sep 19, 2019
1,358
1,654
Seattle, WA
I have lol. Battery took a crap so bad, wouldn't start even popping the clutch. Also on fuel injected manuals, there isn't enough juice to fire up the computers to get fuel or spark. Happens on my motorcycles a lot
You gotta get a ridiculous running start - safety be damned. But c’mon, 2 years is just ridiculous. We gotta call them out when call outs are due - anything less is a disservice. My wife’s old Scion had a lead acid Panasonic OEM battery that lasted - I *sugar* you not - 10 effing years. I’m still mystified by that, to this day.
 

Trekker_

Member
Sep 7, 2021
178
46
Mission Viejo, CA
You gotta get a ridiculous running start - safety be damned. But c’mon, 2 years is just ridiculous. We gotta call them out when call outs are due - anything less is a disservice. My wife’s old Scion had a lead acid Panasonic OEM battery that lasted - I *sugar* you not - 10 effing years. I’m still mystified by that, to this day.
I can tell you, as a fully certified mechanic, 2 years is not uncommon. That being said, there should be an alert for the 12v before its fully fails. Tracking voltage over time and what not is not hard
 

drtimhill

Active Member
Apr 25, 2019
1,951
2,448
Seattle
You gotta get a ridiculous running start - safety be damned. But c’mon, 2 years is just ridiculous. We gotta call them out when call outs are due - anything less is a disservice. My wife’s old Scion had a lead acid Panasonic OEM battery that lasted - I *sugar* you not - 10 effing years. I’m still mystified by that, to this day.
This is really a side effect of the different demands placed on the battery. An ICE battery has to crank the engine and start the car, that's a BIG load, especially in cold weather, so it has to be rated high enough for this one short but heavy demand. The result? All the day-to-day load once the car is running is small and the battery lasts a long time. But EVs dont need that huge capacity, they are only there to provide a short-term power supply for the car electrical systems (and are topped up from the HV battery). So the battery is much smaller, and doesnt last as long. I'm sure you COULD put in a big battery and have it last much longer, but those things are heavy, and Teslas already weigh a lot ... and weight gain = range loss.
 

iwannam3

Member
Aug 8, 2016
953
1,324
Washington
FWIW nothing resolved this problem except for the “hard reset” in my OP.

By the way if it’s considered “normal” for this thing to leave me stranded every ~2 years because of a failed 12V battery, might find myself in another car.
Is $42.50/year maintenance cost too much? Compared to oil changes?
 

iwannam3

Member
Aug 8, 2016
953
1,324
Washington
Yeah, I'm contemplating this action. Although I'm also looking into replacing the stock 12V battery with an Ohmmu.
$435 for the ohmuu! You can buy 5 batteries for that over the next 10 years! O-moo has 4 year warranty. Also Elon can change lead acid charging operation and Li will kick out error messages, again. Happened before and O-moo had to adjust their BMS.
 

AZAV8R

Member
Aug 29, 2020
126
107
Arizona
FWIW nothing resolved this problem except for the “hard reset” in my OP.

By the way if it’s considered “normal” for this thing to leave me stranded every ~2 years because of a failed 12V battery, might find myself in another car.
I put an Ohmmu lithium battery in at HAL's one year anniversary, as normal 12v batteries die prematurely in the desert heat. Getting stranded in a mall parking lot when its 110f OAT is not my idea of fun.
:cool:
 

Iain

Member
Feb 5, 2020
269
510
Austin
You gotta get a ridiculous running start - safety be damned. But c’mon, 2 years is just ridiculous. We gotta call them out when call outs are due - anything less is a disservice. My wife’s old Scion had a lead acid Panasonic OEM battery that lasted - I *sugar* you not - 10 effing years. I’m still mystified by that, to this day.
Living in Seattle your battery shouldn’t be failing after two years. Here in Texas you better be checking/changing your battery every two years. My last Tundra I had from 2012-2020 and I changed the battery 3 times. The battery that came with the truck lasted 14 months 😏
 
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Dolemite

is my name
Sep 19, 2019
1,358
1,654
Seattle, WA
So you going to throw away all that the Tesla offers to save $35 a year? Do you have many bullet holes in your feet?
Yes, they help me run faster.

Living in Seattle your battery shouldn’t be failing after two years. Here in Texas you better be checking/changing your battery every two years. My last Tundra I had from 2012-2020 and I changed the battery 3 times. The battery that came with the truck lasted 14 months 😏
I only recently moved to this dystopian 3rd world country.
 

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