I understand this could be ANYTHING but I figured it was worth the ask. I purchased the truck and it has an airbag light. Fair enough, I know what that is. I took it for an oil change and when it was done the ABS, Brake, and DSC light was one which renders special programs useless. I didn't blame the oil change place because they would have denied anything anyway. I plugged in my GAP tool and there's no faults related to that. I cleared faults to no avail. I plug in my scangauge and it goes away. Great! I take the truck to get 2 tires installed. I pick it up, the lights are back on. Clearly, this seems to be related to services but why? I have coil spring conversion w/ the AB EAS box so I don't think suspension is causing the issues on the lift.

 

Check your standby, after settling for a while, and running voltages. It could be a faulty brake switch, but that typically will toss a code up. And really, when you post "no faults related to that", well that is not of any help unless there are absolute no codes at all. Because the systems are well integrated, so a fault in one place can disable other systems. Basically if the air ride (yes I know you dont have it) fails, then terrain response is taken out too. So if there are any codes, post em just to see if they could be the cause.

 

Just have a couple. Airbag

• B0028-1B (AF) Right side air bag deployment control - General electrical failure - circuit resistance above threshold
  ( on 22-06-2022 17:44:57 at 247354 km )

Audio System

• U1A03-62 (68) Vehicle configuration parameter - Algorithm based failure - signal compare failure
  ( on 23-06-2022 20:23:15 at 247374 km )

Body Control

• B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
  ( on 23-06-2022 19:22:59 at 247350 km )
• B1B56-87 (2F) Sliding roof module - Bus signal/message failure - missing a message
  ( on 22-06-2022 17:45:04 at 247350 km )
• B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
  ( on 22-06-2022 17:45:06 at 247350 km )
• B1D07-11 (2C) Right turn signal circuit - General electrical failure - circuit short to ground
  ( on 22-06-2022 17:54:51 at 247350 km )
• B1D12-15 (2E) Volumetric alarm power circuit - General electrical failure - circuit short to battery or open
  ( on 22-06-2022 17:47:22 at 247350 km )
• U0155-87 (2E) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
  ( on 22-06-2022 17:48:47 at 247350 km )

Parking Aid

• B1B48-01 (6C) Rear left outer sensor - General failure information - general electrical failure
• B1B50-01 (6C) Rear left inner sensor - General failure information - general electrical failure
• B1B46-96 (6C) Rear right inner sensor - Component failure - internal failure
• B1B52-96 (2F) Rear sounder - Component failure - internal failure

Rear Diff

• P080A-00 (2F) Clutch position is not learnt
  ( on 22-06-2022 17:44:51 at 247354 km )
• P186D-00 (2F) Clutch actuator stuck
  ( on 22-06-2022 17:44:51 at 247354 km )

Suspension

• C1A00-54 (AF) Control module - System programming failure - missing calibration
  ( on 22-06-2022 17:44:52 at 247354 km )

Vehicle Dynamic

• U1A4A-68 (0B) Invalid data received from differential control module - rear - Algorithm based failure - event information
  ( on 23-06-2022 19:24:47 at 247354 km )

 

I would clear and do a hard reset. Just pull the main battery for 10 minutes. Your issue could be related to the Vehicle Dynamic fault, which is sorta like a gateway to the Terrain system maybe. And it is getting tripped up by the rear diff, which you may actually have a serious issue you dot want to ignore.

So first, clear faults and reset. See what happens. If you get the faults again you can try an experiment and IF YOUR BATTERY IS GOOD then you can edit the CFF to remove your rear locking diff. And see if that helps. If it does, the issues is your rear diff which is throwing all sorts of issues - if you had air ride, then it would probably be dropping to access hight on you also.

 

Have you resolved this issue yet? I’m having similar issues… I’ve also had very similar coeds.
L319 - LR3 2005
Vehicle scanned on 05-07-2021 15:43
Using IIDTool BT V4.0 B2742

Airbag

• B0001-1B (AF) Driver's frontal stage 1 - deployment control - General electrical failure - circuit resistance above threshold
  ( on 05-07-2021 15:16:14 at 145594 mi )

Audio Amplifier

• B1A12-13 (2F) Speaker 12 circuit - General electrical failure - circuit open
  ( on 05-07-2021 15:40:03 at 145594 mi )
• U3000-55 (2F) Control module - System programming failure - is not configured

Body Control

• B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
  ( on 05-07-2021 15:16:31 at 145593 mi )
• B1B55-87 (2F) Rain sensor module - Bus signal/message failure - missing a message
  ( on 05-07-2021 15:16:22 at 145593 mi )
• B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
  ( on 05-07-2021 15:16:24 at 145593 mi )
• B1D12-15 (2E) Volumetric alarm power circuit - General electrical failure - circuit short to battery or open
  ( on 05-07-2021 15:16:46 at 145593 mi )
• U0155-87 (2E) LCD Gauge Communication Lost - Bus signal/message failure - missing a message
  ( on 05-07-2021 15:18:12 at 145593 mi )

Rear Diff

• P0713-00 (2F) Transmission fluid temperature sensor A - circuit high input
  ( on 07-09-2024 13:59:38 at 2955382 mi )

Transfer Case

• U0136-87 (2F) Lost communication with differential control module - rear - Bus signal/message failure - missing a message
  ( on 05-07-2021 15:16:32 at 145594 mi )

After multiple repairs throughout the vehicle. These are my most recent codes. My airbag light was due to the passenger side seat belt buckle… and a bad clock spring. Got both from eBay and fixed that light. I fixed the trans temp issue. A rodent chewed a wire. Got that fixed now new transmission or differential issues… the saga continues, see below. L319 - LR3 2005
Vehicle scanned on 21-10-2022 14:41
Using IIDTool BT V4.0 B2691

Audio Amplifier

• B1A12-13 (2F) Speaker 12 circuit - General electrical failure - circuit open
  ( on 18-10-2022 18:15:00 at 161976 mi )
• U3000-55 (2F) Control module - System programming failure - is not configured
  ( on 18-10-2022 18:15:00 at 161976 mi )

Body Control

• B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
  ( on 18-10-2022 18:09:12 at 161972 mi )
• B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
  ( on 18-10-2022 18:09:08 at 161972 mi )
• B1D12-15 (2E) Volumetric alarm power circuit - General electrical failure - circuit short to battery or open
  ( on 18-10-2022 18:09:53 at 161972 mi )
• U0155-87 (28) Lost communication with instrument cluster control module - Bus signal/message failure - missing a message
  ( on 19-10-2022 07:29:35 at 161972 mi )

Engine Petrol

• P0171-00 (E8) System too lean (bank 1)
• P0576-16 (28) Speed control input - circuit low - General electrical failure - circuit voltage below threshold

Instrument Pack

• U0132-87 (2E) Lost communication with ride level control module - Bus signal/message failure - missing a message

Rear Diff

• P186D-00 (28) Clutch actuator stuck
  ( on 18-06-2022 22:53:12 at 9975982 mi )

Vehicle Dynamic

• U1A4A-68 (08) Invalid data received from differential control module - rear - Algorithm based failure - event information
  ( on 21-10-2022 13:07:23 at 162085 mi )

 

Wonder if they're lifting the truck with the by the rails when they do work.

If the wheels aren't supported the suspension gets confused and unhappy because of the bags being stretched.

Since you have a GAP tool, go through the suspension calibration (pretty simple, just follow the directions on their site).

 

Lifting the truck would not matter unless there are extension rods installed. The suspension is limited, physically, within the range of the sensors. Your actor fault will cause tons of other faults. But it looks like you have a ground issue, alternator issue, both or some bad wiring.

 

I reached out to GAP. They agreed to the update for the rear diff and Amp. I downloaded the updates but have not completed them yet. I do not support the suspension when lifting and working on the vehicle. I assume I have rods based on the look of the rods installed. I have not installed any myself. I bought this disco3 two years go and have been fixing it ever sense. I just replaced my alternator three weeks ago. The tabs on the + cable that attaches to the alternator were missing. Kinda worries me. My running voltage is around 13.2-13.8 majority of the day. Starting voltage has been around 14.4. I was thinking I have a bad ground too. I definitely had/have bad wiring. Moisture issues that i hopefully fixed last year… new windshield cowl, new windshield, new sunroof drain tubes, front only. I’ve repaired some corroded wires in the passenger side foot well.

I’m hopeful that when I run the Update for the diff, this problem will be solved… not holding my breath though. I’ve always thought it is a wire issue. Every time I unplug something electrical. I take some dielectric grease and put it on the plugs. With hope to prevent any future issues due to moisture and oxygen on these electrical items.