Agressive braking causes Service ABS and Service ASR lights to come on??

[Steve92LT1]

This seems to happen every so often on my 92 coupe. Say like in a parking lot or something or when braking hard. It's not all the time. The lights will come on. As soon as I shut the car off and restart it, it's normal again. Is this a bad ABS sensor or something? Is it normal?

Thanks
Steve

 

[CKA_Racing]

This is not normal. I've autocrossed for the last five years which puts the brakes thru some very agressive braking. I have never had the service lights come on, only the ABS enabled lights go one for a second or two when I start braking during the autocross action. Even then it's rare for the lights to go on.

 

[Steve92LT1]

I figured it wasnt normal. Everything seems to work fine though. ABS and ASR active lights come on when they are activated. That all seems to work great.

Hmm...
Steve

 

[CKA_Racing]

A ODBI scanner that also has the chassis module would be able to tell what code is being set. There are some small shops around that have the Snap-On scanner with this module. Try calling some shops. Of course dealerships have them also.

 

[Steve92LT1]

Something I noticed when i went out and looked at my car. It has those disc brake dust shield things on it. The previous owner installed them. But there is a TON of metallic brake dust/stuff on the inside of the wheels and in that area. I'm wondering if this might be causing a problem with the ABS sensors.

I searched and found this thread where it looks like I can do a diagnostics of my own on the ABS system. http://corvetteactioncenter.com/forums/showthread.php?s=&threadid=8485&highlight=abs+diagnostics

Is there a preferred cleaner to clean these sensors. Regular brake cleaner?

Thanks
Steve

 

[CKA_Racing]

Brake cleaner should work fine.

 

[Rabbit]

Top off the brake fluid??

 

[Steve92LT1]

Just checked the codes... it was getting H83 which is low fluid history code. I checked it and it wasnt real low or anything, but I topped it off just for sure.

Hmm....
Steve

 

[c4cruiser]

The brake fluid level sensor in the master resevoir is pretty sensitive. Sometimes only being less than a 1/4 inch low will activate the lights.

 

[Black Ice]

Yup its the fluid just add some.