Bentley From the original 3 Litre to the current Continental GT and Mulsanne

ZAB firmware update - need help about correct version

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Old Jan 25, 2022 | 08:43 PM
  #16  
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Hello @molphar ,
I can not answer 100% as to the 2010 head unit with the 2004 GT and TPMS, my GT is comprised of a 2006/7 wiring harness, 2007 tpms control module, 2007 tpms antennas/sensors, and the added 5th antenna, unlike the 2004 to May 05 setup, which only has one in each wheel well, the antennas are totally different in design and wiring, as are the sensors in the wheels, the systems go from 2004 to May of 2005, then the new system from June of 2005 forward.

I am not saying that the 2010 head won't work with 2004 tpms, I just can not say for sure that it definitely does, my GT dash gave the same warning as yours, and my 2010 head unit give wacky pressure readings on and off, but after system learning a few times, I have had no tpms warning at all, until the cold weather and one of my tires was a bit low, I put the air in, and the warning was gone.

I hope to feel better soon and get some time in on the GT, so I can answer your questions better.

I will be installing the PDC module as you did, and i will go through coding, to see if the orange warning graphics appear, I have not located my spare 3rd brake light yet..

Johnny

.

 
Old Jan 26, 2022 | 04:28 AM
  #17  
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im using 08 module, but i didn't upgrade antennas ill try to find all part numbers.

About third brake,, don't worry, take care of yourself! I've had some shematics from similar block from another car and going to test prototype this ot next weekends, so ill post result.and the next week - dashboard.
 
Old Jan 27, 2022 | 06:13 PM
  #18  
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@molphar ,
What is the coding of the RVC module (6C), can you post a picture or screenshot of 6C on RT and show the balloon that pops up with options of coding numbers, is "optical parking system installed" added into the numbers ?

The "2000003" is from a 2009 FS of a fellow member here on 6Speed.

Johnny

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Old Jan 27, 2022 | 06:41 PM
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Ill do it next time i sit in the carm but as i remember it wa 2 0000 2 not shure how much of zeros. But. ones i tried touareg module it burned up 30ampere, so i worry to try something without BENTLEY on that module ))

and i need coding for 3d0937049m i thinkl it will solve all trobles with head unit and gauges, including turn signals )
 

Last edited by molphar; Feb 2, 2022 at 09:51 PM.
Old Feb 2, 2022 | 07:01 PM
  #20  
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I've tried as vsdc advises for otical system it is 2020002 but incorrect. ill try 2000003 (as for spur) tomorrow
but. i thinkt it is 3W0 919 283 D needed for this
 

Last edited by molphar; Feb 2, 2022 at 09:51 PM.
Old Feb 3, 2022 | 12:17 PM
  #21  
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38 odis logs from cont, spur, and even mulsane, what i can tell that coding is 2020002 but i found only one car with 2270 version of headunit and there was no optical system of PDC, but rear camera was installed and had coding 2000002 so, what i can tell. i see that screen on my car. i know coding for rear camera. i don't know neede version of rear camera, and needed version of parktronic. so if somebody has car with this options, can you hhelp wit that info. we need it so much!
upd: https://forums.ross-tech.com/index.php?threads/20588/

here we have. all modules and versions as needed but his not working module is not even coded for optical system!
 

Last edited by molphar; Feb 3, 2022 at 01:18 PM.
Old Jul 22, 2025 | 04:11 AM
  #22  
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Originally Posted by Johnny Hotspur GT
Hello @molphar ,
Being that you have a 2004 iirc, does your vehicle have the parking sensors in the front and rear bumpers, do you have the PDC switch on the dash as shown in my attached picture ?

As far as infotainment head units go, here in the US our head units from 2004-2010 that I have worked on all end with part number 008, whereas Euro units end with 007, and of course different revision letters at the end, so I would think that your firmware/software version would be different also.

Johnny

.
Sorry for reviving this Johnny, but my UK RHD 2005 GT's Zab unit malfunctioned for a bit (screen would stay on after ignition off) and then now its completely dead. Wont power on. Im able to find a replacement for a good price but for a 2010 GT speed. It is also from a UK car. Do you think I could just drop it in or would I need another from a 2005 car?
 
Old Jul 25, 2025 | 03:08 PM
  #23  
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Hello @virtual_law ,
As to using a 2010 head unit, it would bring up more issues to fully function properly.

The 2010 uses DVD-ROM navigation disc drive, whereas your 2005 is the CD-ROM navigation disc drive system, the other issue is if this 2010 head unit is a NAIM for Bentley unit, if so, that opens up all the wiring I did in my rebuild, along with adding the NAIM subwoofer enclosure, center tweeter, and also requiring the NAIM amplifier itself.

Therefore, it's best to stay within your year range, I would think you should be good within the 2005-07 range, that is, unless you know of any specific changes to stated years where your market had any other significant changes/options, like when your market got the DVD disc drive.





Johnny


Originally Posted by virtual_law
Sorry for reviving this Johnny, but my UK RHD 2005 GT's Zab unit malfunctioned for a bit (screen would stay on after ignition off) and then now its completely dead. Wont power on. Im able to find a replacement for a good price but for a 2010 GT speed. It is also from a UK car. Do you think I could just drop it in or would I need another from a 2005 car?
 
Old Feb 1, 2026 | 01:23 PM
  #24  
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Originally Posted by Johnny Hotspur GT
Hello @virtual_law ,
As to using a 2010 head unit, it would bring up more issues to fully function properly.

The 2010 uses DVD-ROM navigation disc drive, whereas your 2005 is the CD-ROM navigation disc drive system, the other issue is if this 2010 head unit is a NAIM for Bentley unit, if so, that opens up all the wiring I did in my rebuild, along with adding the NAIM subwoofer enclosure, center tweeter, and also requiring the NAIM amplifier itself.

Therefore, it's best to stay within your year range, I would think you should be good within the 2005-07 range, that is, unless you know of any specific changes to stated years where your market had any other significant changes/options, like when your market got the DVD disc drive.


https://youtu.be/YxNNhfusBRo?si=OsdUuOsDGH_Y_jeT


https://youtu.be/9iQ4U__pgBw?si=chSY_X6yfjXR_sIQ

Johnny
So Ive replaced the unit. My original was a Conti GT 2005 3W0035007G and the replacement was a used 3W0035007M also from a 2005 GT.

It powered right up, controls HVAC fine, says the key is synchronized on startup, etc and car fires up. However, my front is sagging all the way to the bottom now. I scanned the car and Im getting two errors in the Level Control System that weren't there before: 1. 00776 Left front Level Control Sensor Defective 2. 01769 Right front level control sensor Defective

Im pressed to think this is a coding error as these didnt exist prior to infotainment install. Can you advise if theres a software fix to attempt before throwing parts at it?

Thanks!
 
Old Feb 1, 2026 | 04:39 PM
  #25  
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Hello @virtual_law ,
I have the same feeling about this issue just as I do to the N75 / fuse blowing issue.

So please give us some time lines for issues occurrence, as your N75 / fuse issue as I stated in the other thread, I believe to be tied to the mechanic replacing the alternator, just as I feel the front level sensors both left and right (00776 front left / G78, and 01769 front right / G289) now have issues because of the work performed at the front end of the vehicle, that being, the alternator, as I doubt for one second that the Infotainment head is the cause of these faults with your suspension, as if the head unit were the cause, then all four corners would show faults, not just the front where the mechanic was working, furthermore the actual faults for the level sensors are not shown, just the address of each sensor, being 00776 and 001769, so show us the actual 3 digit fault code as pictured below.

It's most likely that depending on how the mechanic changed the alternator, meaning, the front suspension/subframe being dropped, that the connections for each level sensor were not properly seated/connected, or somehow damaged.






.
Johnny


.

Originally Posted by virtual_law
So Ive replaced the unit. My original was a Conti GT 2005 3W0035007G and the replacement was a used 3W0035007M also from a 2005 GT.

It powered right up, controls HVAC fine, says the key is synchronized on startup, etc and car fires up. However, my front is sagging all the way to the bottom now. I scanned the car and Im getting two errors in the Level Control System that weren't there before: 1. 00776 Left front Level Control Sensor Defective 2. 01769 Right front level control sensor Defective

Im pressed to think this is a coding error as these didnt exist prior to infotainment install. Can you advise if theres a software fix to attempt before throwing parts at it?

Thanks!
 
Old Feb 1, 2026 | 05:31 PM
  #26  
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Or perhaps they both go to the same ground spot which wasn’t reconnected or wasn’t cleaned well enough prior to reconnection.
 
Old Feb 1, 2026 | 06:34 PM
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Hello @jeyjey ,
The level sensor connector's wiring does not go to any "ground spot" for ground, each level sensor has a 6 pin plug, which 3 pins are used on each, all 3 wires from each level sensor runs all the way to the 81 and 40 pin plugs on the suspension control module located behind the rear seat side panel.





Johnny


.


Originally Posted by jeyjey
Or perhaps they both go to the same ground spot which wasn’t reconnected or wasn’t cleaned well enough prior to reconnection.
 
Old Feb 2, 2026 | 04:11 AM
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Originally Posted by Johnny Hotspur GT
Hello @virtual_law ,
I have the same feeling about this issue just as I do to the N75 / fuse blowing issue.

So please give us some time lines for issues occurrence, as your N75 / fuse issue as I stated in the other thread, I believe to be tied to the mechanic replacing the alternator, just as I feel the front level sensors both left and right (00776 front left / G78, and 01769 front right / G289) now have issues because of the work performed at the front end of the vehicle, that being, the alternator, as I doubt for one second that the Infotainment head is the cause of these faults with your suspension, as if the head unit were the cause, then all four corners would show faults, not just the front where the mechanic was working, furthermore the actual faults for the level sensors are not shown, just the address of each sensor, being 00776 and 001769, so show us the actual 3 digit fault code as pictured below.

It's most likely that depending on how the mechanic changed the alternator, meaning, the front suspension/subframe being dropped, that the connections for each level sensor were not properly seated/connected, or somehow damaged.






.
Johnny


.
Okay some welcome news. I managed to peer underneath the 0.5 inches of clearance in the front, and turns out the level sensor connecting rod has popped out on the front left, causing the car to completely slump on both front left and right. This also results as a "defective sensor" fault code on my end.

No idea how this happened as it seemed fine for a few days after alternator replacement.

But thankfully feels like an easy fix.
Question: Is it safe to put this car into jacking mode now and then jack it up? Cause I imagine the pump will try to fill up the front struts without success as its not getting any feedback from the sensors.

Forever thanks for the help!


 

Last edited by virtual_law; Feb 2, 2026 at 04:16 AM.
Old Feb 2, 2026 | 08:53 AM
  #29  
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@virtual_law ,
That's some good news hopefully.
Put it in jack mode, which it might already be, as I recall you said jack mode wouldn't go away even after driving, but either way, jack it up and reinstall the rod, BUT, I believe that you have lost the retaining insert on the rod, unless it is stuck to the mounting point, if gone, you will need new rod/rods.









Johnny


.
 
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