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| D2 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc |
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Thread Tools | Display Modes |
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#1
24th April 2010, 10:41 PM
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Bypassing Occupancy/Airbag sensor on a D2
My brother in law (Ranj) did this for me and wanted to do a write up, so here it is from him, it would be handy for anyone wanting to put in 95.96 seats into a 97+ car or to sort out the famous recaro seat airbag occupancy sensor fault.
It is possible to code out the rear seat sensors but still need to bypass the front seat occupancy sensors to get rid of the airbag light. To do this I had to replace the sensor with a load to make the airbag module think that a sensor was present. So I connected a resistor (100 ohms) to the the blue and white wires from the block connector shown below, this is the one that comes out of the carpet and connects into the seat. To bypass the airbag sensor use a 5.0 ohm resistor and connect it to the two wires in the orange connector coming out from under the carpet. It is similar process to bypass the rear seatbelt sensors. The the 95,96 seatbelts don't have sensors whereas the 97+ do. Cut the yellow connector of the green wire and connect a 5 ohm resistor between the two wires. The green wire is just under the parcelshelf and is connected to the original seatbelts. It is possible to code out the rear seat airbag sensors using VAG COM, however my initial attempts to do so flagged up some incorrect codes from the airbag module (yet to try Ian's suggested code!) You could use resistors again to bypass these sensors. Make sure you don't apply a current to the wires connected to the airbags in the seats! Now I have no airbag lights, success! 
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds 
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#2
25th April 2010, 04:59 PM
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Thanks for that Amar,
Mine's a '98 and I've just had to replace the rear (sports) bench following a rather stupid 'accident' with it. The replacement bench didn't have the occupancy sensors in. However, a local vehicle upholsterer's has recovered my seat base with the undamaged leather from the replacement at quite a reasonable price, hopefully the 'bum sensors' will still work when I collect it tomorrow morning, if not - thanks for the post mate Richard.
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I Love the smell of petrol in the morning! Other vehicles 1968 Rover P5B Coupe (Modified & V-Quick, but I have to sell this now  ... Boo Hoo!)'92 Mitsubishi Pajero V6 (Petrol) Super Exceed (Gone now) '06 Harley Davidson Night Train Oh Yes....... The '98 PF S8!
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#3
25th April 2010, 05:33 PM
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Only the occupancy sensors are in the base. The airbags are in the upright rear seats.
If you are transfering the cloth across to the base with seat sensors then you shouldnt have a problem. Otherwise if the sensor is damage then all you have to do is connect a 100 ohm resistor across the black connector with the blue and white wire. You can pick up the resistor from maplins. In my case, I just cut the sensors out of the old base and chopped it in to the new base. Ranj
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#4
26th April 2010, 04:28 PM
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I refitted the rear bench today, all went according to plan. I still had the airbag warning on the dash, as I'd not disconnected the battery in my rush to remove the seat.....
Managed to reset the warning light with my first attempt at using VAGCOM, but it showed a gearbox problem, not that I've noticed anything wrong with the way it drives. So I guess its time to save up. Thanks for the info, a valuable post indeed.. Edit...... Aaah, I panicked, didn't step on brake pedal before activating VagCom (from stateside Audiworld forum).... no need to save now :-)
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I Love the smell of petrol in the morning! Other vehicles 1968 Rover P5B Coupe (Modified & V-Quick, but I have to sell this now ... Boo Hoo!)'92 Mitsubishi Pajero V6 (Petrol) Super Exceed (Gone now) '06 Harley Davidson Night Train Oh Yes....... The '98 PF S8! Last edited by Night Train; 26th April 2010 at 04:48 PM.
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#5
27th April 2010, 03:50 PM
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Thanks for that write up Amar, its on my todo list.
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#6
27th April 2010, 04:43 PM
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No problem, my brother in law did it. The A8 is his car and he's gonna be doing some crazy mileage in it for work!
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#7
27th April 2010, 08:59 PM
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Quote:
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For parts enquiries and Forum User Administration please contact customer services directly, not me  - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones. The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff...... The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous..... The First 20 Audis: 2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey, 2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue, 2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue, 2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey, 2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6, The Second 20 Audis: 2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue, 2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black  , 2007 TT Roadster, 2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black, 2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi) 2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black Most Recent Audis: 2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8 Everything Else 1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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#8
27th April 2010, 09:05 PM
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Quote:
Do you know if that resistance has the seat 'occupied' or not ? I did some tests with a 'BMW' airbag resistor off Ebay, and the most concerning thing was that once fitted, the car just assumed always that there was no passenger sat in the front seat, so they would never get the benefit of an airbag. Personally, if I'm going to crash my car, and I've got the misfortune to do it with someone I'm bothered about in the passenger seat, I'd hate to think they suffered any injuries because I saved a few quid bypassing a safety device.... Its good work Amar and will get it through the MOT, but I wouldnt ever do it personally unless I knew the resistance was set to make it think someone was always sat in the seat, and not the other way round..... Just food for thought...
__________________
For parts enquiries and Forum User Administration please contact customer services directly, not me - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones. The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff...... The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous..... The First 20 Audis: 2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey, 2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue, 2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue, 2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey, 2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6, The Second 20 Audis: 2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue, 2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster, 2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black, 2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi) 2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black Most Recent Audis: 2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8 Everything Else 1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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#9
27th April 2010, 09:09 PM
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Thanks for bringing that to my attention Ian, I'm really not sure. My brother in law did everything so will get him to look at the thread!
__________________
2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#10
6th May 2010, 01:45 PM
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Airbag light sorted, Big Thanks to Amar and Ranj
Hi All, This is my first post not sure how to do this, I am not good with computers, but here goes. I have had the airbag light on for around a year, its driving me nuts. So after reading Amars write-up on it, I thought I give it a to give it a go, My car is a 51plate S8, and vagcom was telling me its G128 passenger seat occupancy sensor faulty, So I followed Amars instructions and fitted a 100 ohm resistor across the blue and the white wires, which on my car made no difference, So i ran 2 wires up to the centre console to try other resistors to them,
So off to Maplins I went and bought a 1K ohm pot, and connected that to the 2wires on the centre console,Also I connected vagcom up to show Airbag measuring blocks, and I discovered that the 100R was giving me a reading "too low", adjusting the pot I could change the reading from "too low" to occupied to "too high", I adjusted the pot to read occupied, then erased any stored airbag fault codes, I didnt bother measuring what resistances caused the reading to change as its not important,I have achieved what I wanted, which is the airbag light to switch off. I would like to say a BIG Thanks to Amar and Ranj for all their help in sorting this out for all the the people with this airbag light fault on their cars.
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Linear Mode
