2012 Electrical issues; dash goes dark while driving, no HVAC, stereo, TPMS sensor error. videos.

[wehtjns]

So this has happened a few times, but this morning was the worst.

This is my wife's car, 2012 LR4 5.0 we have owned it for about 3 years. It started about a year ago but has occurred now maybe four times. We installed a newer Interstate battery from LR about a year ago, I've checked the battery voltages and they are right on the money, I'll post numbers later. I've checked all the battery connections that I can think of to make sure they are tight.

It has been super dry here in Atlanta, FYI.

It usually just occurs at random; while driving, at a red light, etc. But this morning was the first time it has occurred while starting the car.

The tire pressure, temp gauge, AC are the first things to go out. Then the AC will stop flowing air, aka the blower, and then the entire dash goes out. The car still seems to drive normally, and no dimming of the headlights have been noticed. And then within 10-30 seconds, everything just restarts as normal.

This morning:

The rest are from the last few months.

at a red light, and AC is off, during the daytime

The dash, completely blacked out.

TPMS light on, stereo and HVAC off.

I do own the Gap-II tool, but I'm very new at using it. The wife is currently at work with the car. About a month ago we took the car to the dealer, and they were unable to find any issue or replicate the issue. It will likely go back in the morning, as the wife is starting to feel uncomfortable driving it.

Any thoughts?, anything I can scan with GAP?

Thanks,
Nathan

 

[wehtjns]

And the GAP data


VIN: SALAK2D40CA619731
L319 - LR4 2012
Vehicle scanned on 29-09-2019 12:31
Using IIDTool BT V3.0 B2624

ACM-Audio System

• U2200-41 (2C) Control module configuration memory is corrupt - System internal failure - general checksum failure

BCM-Body Control

• B102B-87 (28) Passive key - Bus signal/message failure - missing a message
  ( on 29-09-2019 06:10:07 at 127562 km )
• B1B01-87 (28) Key transponder - Bus signal/message failure - missing a message
  ( on 29-09-2019 06:10:16 at 127562 km )
• U0155-00 (28) Lost communication with instrument cluster control module
  ( on 29-09-2019 06:09:04 )
• U0164-00 (28) Lost communication with heating ventilation and air conditioning control module
  ( on 29-09-2019 06:09:01 )
• U0184-00 (28) Lost communication with audio unit
  ( on 29-09-2019 06:07:15 )
• U0214-00 (28) Lost communication with the remote function actuation
• U0199-00 (28) Lost communication with the door control module A
  ( on 29-09-2019 06:08:50 at 127561 km )
• U0200-00 (28) Lost communication with the door control module B
  ( on 29-09-2019 06:08:59 at 127561 km )
• U0208-00 (28) Lost communication with the seat control module A
  ( on 29-09-2019 06:09:00 at 127561 km )
• U025D-00 (28) Lost communication with front controls interface module B
• U0010-88 (28) Medium speed CAN communication bus - Bus signal/message failure - bus is off
  ( on 29-09-2019 06:09:06 )
• U0018-00 (28) Medium speed CAN communication bus (–) shorted to bus (+)
  ( on 29-09-2019 06:09:43 )

DSM-Driver Seat

• U0010-88 (28) Medium speed CAN communication bus - Bus signal/message failure - bus is off
• U0140-00 (28) Lost communication with body control module
  ( on 13-09-2019 13:14:40 at 126487 km )
• U0199-00 (28) Lost communication with the door control module A
  ( on 13-09-2019 13:14:04 at 126487 km )

FCDIM-Front Control

• U0010-00 (28) Medium speed CAN communication bus
  ( on 28-09-2019 15:24:53 at 127561 km )
• U0140-00 (28) Lost communication with body control module
  ( on 29-09-2019 06:07:14 )
• U0300-00 (28) Internal control module software incompatibility
  ( on 21-10-2025 12:19:49 at 0 km )
• B1D21-13 (28) Remote control switch - General electrical failure - circuit open
  ( on 15-09-2019 16:34:27 at 126613 km )

FCIM-HVAC Buttons

• U0155-00 (28) Lost communication with instrument cluster control module
  ( on 29-09-2019 06:05:47 )
• U0164-00 (28) Lost communication with heating ventilation and air conditioning control module
  ( on 13-09-2019 13:14:49 at 126487 km )
• U0424-68 (28) Invalid data received from heating, ventilation and air conditioning control module - Algorithm based failure - event information
  ( on 13-09-2019 13:14:49 at 126487 km )

HVAC-Ventilation

• U0010-88 (28) Medium speed CAN communication bus - Bus signal/message failure - bus is off
  ( on 13-09-2019 13:14:35 at 126487 km )
• U0140-87 (28) Lost communication with body control module - Bus signal/message failure - missing a message
  ( on 29-09-2019 06:05:33 at 127561 km )

IPC-Instrument Pack

• U0140-00 (28) Lost communication with body control module
  ( on 29-09-2019 06:05:33 at 127561 km )
• U0164-00 (28) Lost communication with heating ventilation and air conditioning control module
  ( on 29-09-2019 06:07:04 at 127561 km )
• U0184-00 (28) Lost communication with audio unit
  ( on 29-09-2019 06:05:33 at 127561 km )
• U0208-00 (28) Lost communication with the seat control module A
  ( on 29-09-2019 06:05:03 at 127561 km )
• U3000-87 (28) Control module - Bus signal/message failure - missing a message

KVM-Keyless

• U0140-00 (28) Lost communication with body control module
  ( on 26-09-2019 08:57:26 at 127405 km )

 

[Patrick5454]

Hi, im having a similar issue how did you fix it?

 

[PaulLR3]

If you have a new battery, then maybe the alternator is failing. Is the passenger side valve cover leaking oil and dripping into the alternator?

 

[avslash]

Faulty ground?

 

[Tapps33]

I did a little digging through the service manual, and the common component in all your issues appears to be the Central Junction Box (CJB). As avslash recommended, I’d look for a bad ground, or corroded connection inside your CJB.

Also, when you replaced your battery, did you happen to change the size? When you replaced it, did you reset the computer charge values? This could all be happening because the ECU is commanding the highest level of charge for the battery which is pushing 14-15V to the electrical system because it still thinks your battery is unable to hold a charge. 15V over a long period of time can start to damage your electrical components...the first in line would be the CJB as that’s where the power goes first.

Since you’ve got the gap tool, check to make sure the battery definition in the CCF matches the rated capacities on the battery you have installed. It could be someone swapped an H8 in place of an H7 a while ago, but never updated it. (Or vice verse). Then I’d do an ECU compensation value reset for the entire system....or at least reset the battery compensation. Just to make sure everything starts at a common baseline, then continue to troubleshoot from there.






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[wehtjns]

Hi, im having a similar issue how did you fix it?

 

[wehtjns]

Oh boy, soooo that is a long winded somewhat answer that I don’t have an answer for ( I know but let me explain). But it’s fix! I’ll type a longer answer tomorrow, but in short, it spend over a month at the dealer where they went thru the entire middle speed cambus system looking for the source of the ground. We never found the exact issue. But after reinforcing any possible grounding sites it hasn’t happened again. Knock on a rainforest of wood.