ASR/ABS help needed
Thread Starter
Le Mans Master
Joined: Jan 2002
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From: Jenison MI
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
ASR/ABS help needed
I just put on some C5 wheels and I am running 275-40-17 in front and 285-40-18 in the rear. Now the service ASR and service ABS lights come on and stay on till I turn off the car. Every thing seems to be working right. Do you think that the different tire sizes are messing up the computer? :confused:
Le Mans Master
Joined: Jan 2000
Posts: 6,376
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From: Traverse City MI
Re: ASR/ABS help needed (fsr402)
This is the standard GM brake fluid warning. Top off your brake fluid and make sure there are NO air bubbles in the system. Sometimes you have to top it off a few times before it works.
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
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St. Jude Donor '03-'04-'05-'06-'07
Re: ASR/ABS help needed (fsr402)
If the new tires are the same diameter as the old, there shouldn't be a problem.
If the diameters are different, then you would have the problem you describe.
If the diameters are different, then you would have the problem you describe.
Thread Starter
Le Mans Master
Joined: Jan 2002
Posts: 5,556
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From: Jenison MI
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Re: ASR/ABS help needed (Mr Mojo)
If the new tires are the same diameter as the old, there shouldn't be a problem.
If the diameters are different, then you would have the problem you describe.
If the diameters are different, then you would have the problem you describe.
Race Director
Joined: Jan 2000
Posts: 16,488
Likes: 25
From: USA. Northern Virginia
Re: ASR/ABS help needed (fsr402)
Your wheels and tires have nothing to do with the ASR/ABS light coming on.
I had this problem last year :yesnod: There is a sensor in the brake fluid resv, if it sticks you will get the light coming on when you know nothing is wrong.
Take a small wrench or hammer and tap around the whole assmbly...this will loosen up the sensor and you should lose the light coming on. :yesnod:
Hope this helps, Larry :cool:
I had this problem last year :yesnod: There is a sensor in the brake fluid resv, if it sticks you will get the light coming on when you know nothing is wrong.
Take a small wrench or hammer and tap around the whole assmbly...this will loosen up the sensor and you should lose the light coming on. :yesnod:
Hope this helps, Larry :cool:
Burning Brakes
Joined: Nov 2001
Posts: 1,241
Likes: 9
From: Houston TX
Re: ASR/ABS help needed (fsr402)
yes, the tire sizes will confuse the ABS system. dunno if the difference in your setup is enough to cause a warning light, but it might be.
as others have said, low fluid will also trigger the ABS light (dunno about the ASR, though). my vote is against that possibility if the lights coming on coincided with the wheel swap.
as others have said, low fluid will also trigger the ABS light (dunno about the ASR, though). my vote is against that possibility if the lights coming on coincided with the wheel swap.
Burning Brakes
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Re: ASR/ABS help needed (MSR)
The tire size is programmed for a particular ABS system. The ABS computer monitors each wheel speed and compares. If the speeds are not close to each other, it will trip the light and deactivate the system. With a change in wheel size, this will change the rotation speed of the reluctor. You can check this a couple ways. If you have a scanner with the ABS module, you can watch the individual wheel speeds and note any difference. 1 or 2 mph should be ok. Some ABS systems seem to tolerate a larger deviation. Don't know for sure what the allowance is. Bosch does not make software changes easy.
dlmeyers 90 coupe zf6 3 speed shocks
dlmeyers 90 coupe zf6 3 speed shocks
Thread Starter
Le Mans Master
Joined: Jan 2002
Posts: 5,556
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From: Jenison MI
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Re: ASR/ABS help needed (dlmeyers)
Well it looks like I will just have to BURN these off and then put a little shorter set on.... thanks guys
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