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Front USB charging problems

FalconFour

Supporting Member
Supporting Member
Mar 25, 2016
334
654
San Jose, CA
I can't seem to get the front USB ports to charge... it charges for a few seconds, then stops, then charges, then stops, then charges, then stops... like the USB supply in the car is so appallingly wimpy that charging a phone overloads it. First tried it with an Anker PowerLine 1-foot MicroUSB cable, since I didn't have the Tesla MicroUSB cable yet (thanks for the Lightning and USB-C but you missed the most common one :rolleyes:). Just got the Tesla cable today and ... wow! Same problem, same thing, can't charge my phone in the car.

Couldn't Tesla have just worked with Anker on integrating a reliable, powerful dual-port QC3.0 USB power supply in the car?

Sigh. Anyone have the same problem or should I (try to) take my car in for service (already)?
 

FalconFour

Supporting Member
Supporting Member
Mar 25, 2016
334
654
San Jose, CA
You can get a full power charge thru the 12V power socket.
Doesn't really help when the phone area is completely separated from the 12v power socket... either requiring running a cable out from one compartment and into another which is REALLY FREAKING TACKY FOR A CAR OF THIS QUALITY. (I'm a Tesla/Musk fanboy by self admission, but seriously, this is pretty low-tier crap I was totally _not_ expecting to have problems with!)

I put in a request with support to see if I need to go in for service... I kinda hope I do, because at least that means it wasn't designed this badly ;)

update: The back USB ports charge my phone just fine! %#[email protected]#!!!
 
Last edited:

seyclone

Member
May 8, 2018
89
35
NY
My iPhone 6S+ was down to 11% so I lifted the top cover, removed the phone pad, lifted the undercover, and plugged a long cable into the USB port. The phone showed that it was charging, but continued to lose power. I reversed the whole procedure, unplugged the USB cable, and plugged into one of the rear USB ports - Finally success!

What's going on here? What's with the front USB ports?
 
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angelman

Member
Jul 7, 2018
253
219
los angeles
My iPhone 6S+ was down to 11% so I lifted the top cover, removed the phone pad, lifted the undercover, and plugged a long cable into the USB port. The phone showed that it was charging, but continued to lose power. I reversed the whole procedure, unplugged the USB cable, and plugged into one of the rear USB ports - Finally success!

What's going on here? What's with the front USB ports?
In my case it was just a loose wire connection they needed to fix. Worth it, if only to get a nice model s loaner and a free carwash!
 

hmgolds

Member
Aug 30, 2018
128
95
Brainerd, MN and Boston, MA US
I just returned from a visit to the service center because of our phones not charging. They cycle back and forth and never properly charge.

I was told there is a known issue with certain phones where (again, as I was told) the security in the phone OS is preventing charging. It doesn't effect the rear usb outlets as they are power only. The phones they mentioned are: Nexus 5 S, Moto G5 Plus, Sony Xperia Z5, Motorola G4, Motorola G5. Both of our phones are Motorola models. They don't have any problems charging via data-enabled outlets in other vehicles.

They did replace the front usb hub. They were not able to replicate the problem with any of their phones (all iPhones).

The issue did not arise until about a month after delivery. During that period I know there was one Tesla s/w update and very possibly a phone update.

My next step is to try charging one of our phones from the front usb with the phone turned off. And to test with another Android phone or tablet.
 

AlanSubie4Life

Efficiency Obsessed Member
Oct 22, 2018
10,912
13,663
San Diego
Sometimes (can’t determine the pattern) , if you put a LOCKED iPhone in the front charger, iPhones have a message “unlock iPhone to use accessories”, and the phone will not charge until it is unlocked. This is new behavior (I think?). I don’t know whether it was an Apple update or a Tesla update that started this...

At first I thought it had to do with the USB hub I have but I saw the behavior with the port which does not have the hub. But not right now...
 

hmgolds

Member
Aug 30, 2018
128
95
Brainerd, MN and Boston, MA US
I just returned from a visit to the service center because of our phones not charging. They cycle back and forth and never properly charge.

I was told there is a known issue with certain phones where (again, as I was told) the security in the phone OS is preventing charging. It doesn't effect the rear usb outlets as they are power only. The phones they mentioned are: Nexus 5 S, Moto G5 Plus, Sony Xperia Z5, Motorola G4, Motorola G5. Both of our phones are Motorola models. They don't have any problems charging via data-enabled outlets in other vehicles.

They did replace the front usb hub. They were not able to replicate the problem with any of their phones (all iPhones).

The issue did not arise until about a month after delivery. During that period I know there was one Tesla s/w update and very possibly a phone update.

My next step is to try charging one of our phones from the front usb with the phone turned off. And to test with another Android phone or tablet.


Apparently there can be incompatibility between the vehicle software and the phone software that interferes with the "handshaking" that goes on when you connect to a data-enabled usb port. I've found a workaround that works - use a DataBlocker between the Tesla port and my cable. A charge-only cable might work as well.
 

Dana1

Supporting Member
Supporting Member
May 20, 2018
882
547
Houston
I can't seem to get the front USB ports to charge... it charges for a few seconds, then stops, then charges, then stops, then charges, then stops... like the USB supply in the car is so appallingly wimpy that charging a phone overloads it. First tried it with an Anker PowerLine 1-foot MicroUSB cable, since I didn't have the Tesla MicroUSB cable yet (thanks for the Lightning and USB-C but you missed the most common one :rolleyes:). Just got the Tesla cable today and ... wow! Same problem, same thing, can't charge my phone in the car.

Couldn't Tesla have just worked with Anker on integrating a reliable, powerful dual-port QC3.0 USB power supply in the car?

Sigh. Anyone have the same problem or should I (try to) take my car in for service (already)?
Have you tried another phone just to eliminate the phone as an issue?
 

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