trac control active comes on at 60mph everytime!
Thread Starter
Heel & Toe
Joined: Dec 2002
Posts: 23
Likes: 0
From: marietta ga
trac control active comes on at 60mph everytime!
just got 18" zo6 rims put on...now as soon as i get to 60 mph the trac control kicks in and the car wont go! turn the trac off..and its fine..anyone had this? its 2001 c5 a4
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
Re: trac control active comes on at 60mph everytime! (atlantavette)
18"s all the way around, goodyear runflats...makes no sense to me...
The system is programmed with a certain amount of tolerance on the front/rear wheel speeds. It appears that level is exceeded at the speed you noted the Traction Control engagement.
Rear tires with different aspect ratio could be used to correct the problem or a reprogramming of modules might work. Several members run same sized front/back rims. You might search the archives for the tire combinations they used.
Intermediate
Joined: May 2003
Posts: 46
Likes: 0
From: Lincoln NE
Re: trac control active comes on at 60mph everytime! (mapman)
What exact tire size and model are you running? Goodyear only makes two sizes of runflats 245/45-17 and 275/40-18. I do not understand how you can be running 18 inch runflats on all 4 corners?
[Modified by audiomikej, 4:18 PM 7/31/2003]
[Modified by audiomikej, 4:18 PM 7/31/2003]
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Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Re: trac control active comes on at 60mph everytime! (atlantavette)
i am running the 275/40-18s all the way around on zo6 rims aftermarket rims from AFS wheels
Racer
Joined: Mar 2003
Posts: 482
Likes: 0
From: TX
Re: trac control active comes on at 60mph everytime! (atlantavette)
Thats the answer.. you can't run 4 same-size tires all around.. you need larger tires in the rear..
Go trade your front 275's back in on a set of 245's !
Go trade your front 275's back in on a set of 245's !
Thread Starter
Heel & Toe
Joined: Dec 2002
Posts: 23
Likes: 0
From: marietta ga
Re: trac control active comes on at 60mph everytime! (Dylan Savage)
obviously im a moron..but here goes...will it hurt the car to leave these on? if i reprogram the PCM is that all i need to do? will the car handle terrible? give me the good vs the bad...please!
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,821
From: Charlotte, NC (formerly Endicott, NY)
Re: trac control active comes on at 60mph everytime! (atlantavette)
I am not sure reprogramming the PCM will do the job. The EBTCM isn't affected by PCM reprogramming. It has its own program.
Bill
Bill
