Disable ABS dash warning light?

Alikris · 12th August 2022, 09:12

Hi, ABS warning light has come permenantly on and I've got my MOT test in a few days.

Is there any way I can just disable the dashboard ABS warning light? I've tried pulling the fuse but that only lights up the brake warning light as well as the ABS light.

I'll sort the ABS post MOT test.

Thanks,
Ali

Jeff Turbo · 12th August 2022, 10:03

Quote:

Originally Posted by Alikris

Hi, ABS warning light has come permenantly on and I've got my MOT test in a few days.

Is there any way I can just disable the dashboard ABS warning light? I've tried pulling the fuse but that only lights up the brake warning light as well as the ABS light.

I'll sort the ABS post MOT test.

Thanks,
Ali

Not really as the message will come up on the screen. You could blank off the light if you take the dash front off and hope the MOT tester will miss that but still the ABS fault message will come up.

dave lincs · 12th August 2022, 10:21

Why would you want to disconnect the light to get it through the MOT it is a safety feature of the car?

It will not be that difficult to fix it

bsafly · 12th August 2022, 10:48

If the ABS light doesn’t illuminate and go through the self test cycle on start up, then that is an MOT failure.

Alikris · 12th August 2022, 10:58

So either way, an MOT failure?

Quote:

It will not be that difficult to fix it

It's not difficult to fly a jet plane either. Or do a million other things.

I'll see if I can contact MarinaBrian.

Thanks,
Ali.

Mike Noc · 12th August 2022, 21:06

Quote:

Originally Posted by Alikris

So either way, an MOT failure?

Thanks,
Ali.

You can get it to mimic one of the other warning lights by desoldering the ABS LED and connecting it to the SRS LED for example, but as mentioned far better and probably easier to fix the fault.
Plenty of info on here to help even those of us who can't pilot a plane.

hogweed · 13th August 2022, 09:54

No easy way round this one, sorry - I've been struggling with it myself on and off for 2 or 3 years now, as different sensors etc start to give up.

You could wire the warning light to something like this, to switch it on a for a second or two then off - but probably no easier than sorting the problem out

Use TOAF to tell you where the problem is, but I've had to have wheel bearings replaced and things

MSS · 13th August 2022, 10:20

Quote:

Originally Posted by Alikris

Hi, ABS warning light has come permenantly on and I've got my MOT test in a few days.

..............

I'll sort the ABS post MOT test.

Thanks,
Ali

Isn't that somewhat missing the point of an MOT?

Just imagine what would happen if having disabled the ABS light an accident was to occur followed by an insurer and/or police investigation.

Is the risk of being locked up and bakrupt worth taking?

Quote:

Originally Posted by Mike Noc

You can get it to mimic one of the other warning lights by desoldering the ABS LED and connecting it to the SRS LED for example, but as mentioned far better and probably easier to fix the fault.
Plenty of info on here to help even those of us who can't pilot a plane.

Or visit someone who can fly a plane before the MOT date?

Arctic · 13th August 2022, 10:35

Quote:

Originally Posted by Alikris

Hi, ABS warning light has come permenantly on and I've got my MOT test in a few days.

Is there any way I can just disable the dashboard ABS warning light? I've tried pulling the fuse but that only lights up the brake warning light as well as the ABS light.

I'll sort the ABS post MOT test.

Thanks,
Ali

Hi Ali.
It's best you let your MOT test pass by and get your car on a T4, that should point you in the right direction, most of the time it's the OS rear bearing picking up some rust from the back plates.

When is your MOT you may have time to get it rectified before then but you need readings.

Alikris · 13th August 2022, 18:19

Hia Arctic, thanks for your input. MOT expires 21st August. I've texted Brian but no reply so I guess he's on Holiday? Will try texting him again next week.

I disassembled the NS rear brake yesterday morning and blew compressed air into and around the sensor (I don't have a large enough socket to remove the hub). Tried to do the same with the OS rear this morning and broke a brake pad. Thankfully one of the neighbours was going into Hexham and bought a new set of pads. Will blow compressed air at the sensor tomorrow morning. Speedo works so it's not drivers side front. If it's the passenger side front sensor it's so encased in rust that I fear it'll have to be drilled out, not something I can do.

Thankfully I don't 'need' to drive the car (I only go out once a week for shopping), but once the MOT expires, driving to Brian's will set off the ANPR cameras I fear.

I've read the thread about voltage readings but I can't undo any of the connectors, locked solid and am afraid of breaking them if I try to force them. T4 would be best then buy the right part and then get the local garage to do it and then do the MOT.

I think Brian is the only person around Northumberland / Newcastle with a T4? Local garage have tried previously with their computer but apart from resetting engine warning light, no coms.

I've got TOAF but 'it'll only communicate with the engine module, it doesn't register any other modules sadly. No idea why, tried different computers and have the correct modded VAG-COM cable. Crazy.

Fingers crossed that blowing air at the sensor tomorrow will fix the problem. . . .

Ali.

12th August 2022, 09:12	#1
Alikris Gets stuck in Rover 75 1.8 Connie SE Join Date: Dec 2015 Location: Vindolanda, Northumberland Posts: 539 Thanks: 111 Thanked 153 Times in 105 Posts	Disable ABS dash warning light? Hi, ABS warning light has come permenantly on and I've got my MOT test in a few days. Is there any way I can just disable the dashboard ABS warning light? I've tried pulling the fuse but that only lights up the brake warning light as well as the ABS light. I'll sort the ABS post MOT test. Thanks, Ali __________________ Vicky: born Thursday, 15th April 2004 @ 08:20:55. The 95,246th 75 to be produced, and the 4,783rd 75 in British Racing Green Pearlescent.

12th August 2022, 10:48	#4
bsafly Just going about! Rover 75 CDTi Connie SE Tourer starlight silver and serpents. MG ZT-T 190+ in Raven Black. Join Date: Mar 2016 Location: Great Leighs Posts: 468 Thanks: 626 Thanked 167 Times in 110 Posts	If the ABS light doesn’t illuminate and go through the self test cycle on start up, then that is an MOT failure. __________________

13th August 2022, 09:54	#7
hogweed I really should get out more....... Vauxhall Insignia CDTi; MG TF 135 Join Date: Jan 2010 Location: Norn Iron Posts: 2,958 Thanks: 942 Thanked 378 Times in 297 Posts	No easy way round this one, sorry - I've been struggling with it myself on and off for 2 or 3 years now, as different sensors etc start to give up. You could wire the warning light to something like this, to switch it on a for a second or two then off - but probably no easier than sorting the problem out Use TOAF to tell you where the problem is, but I've had to have wheel bearings replaced and things __________________ Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.

13th August 2022, 18:19	#10
Alikris Gets stuck in Rover 75 1.8 Connie SE Join Date: Dec 2015 Location: Vindolanda, Northumberland Posts: 539 Thanks: 111 Thanked 153 Times in 105 Posts	Hia Arctic, thanks for your input. MOT expires 21st August. I've texted Brian but no reply so I guess he's on Holiday? Will try texting him again next week. I disassembled the NS rear brake yesterday morning and blew compressed air into and around the sensor (I don't have a large enough socket to remove the hub). Tried to do the same with the OS rear this morning and broke a brake pad. Thankfully one of the neighbours was going into Hexham and bought a new set of pads. Will blow compressed air at the sensor tomorrow morning. Speedo works so it's not drivers side front. If it's the passenger side front sensor it's so encased in rust that I fear it'll have to be drilled out, not something I can do. Thankfully I don't 'need' to drive the car (I only go out once a week for shopping), but once the MOT expires, driving to Brian's will set off the ANPR cameras I fear. I've read the thread about voltage readings but I can't undo any of the connectors, locked solid and am afraid of breaking them if I try to force them. T4 would be best then buy the right part and then get the local garage to do it and then do the MOT. I think Brian is the only person around Northumberland / Newcastle with a T4? Local garage have tried previously with their computer but apart from resetting engine warning light, no coms. I've got TOAF but 'it'll only communicate with the engine module, it doesn't register any other modules sadly. No idea why, tried different computers and have the correct modded VAG-COM cable. Crazy. Fingers crossed that blowing air at the sensor tomorrow will fix the problem. . . . Ali. __________________ Vicky: born Thursday, 15th April 2004 @ 08:20:55. The 95,246th 75 to be produced, and the 4,783rd 75 in British Racing Green Pearlescent. Last edited by Alikris; 13th August 2022 at 18:22..

12th August 2022, 10:21	#3
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,412 Thanks: 380 Thanked 986 Times in 476 Posts	Why would you want to disconnect the light to get it through the MOT it is a safety feature of the car? It will not be that difficult to fix it