Service brake system message!?
Feb 23, 2009 | 04:11 PM
#11
Launching!
Joined: Apr 2006
Posts: 271
Likes: 0
From: New Bern, NC
Feb 23, 2009 | 08:19 PM
#12
They won't lock up. If anything, the truck will think the front tires are locking up and you'll keep rolling. This won't happen now though since you put your regular tires back on.
You have 4 wheel ABS, so the sensors expect each tire to rotate at the same RPM. I'm just doing the math really quick, but that's something like a 13% differential from front tire RPM to rear tire RPM when you put 26" tires on the back.
You have 4 wheel ABS, so the sensors expect each tire to rotate at the same RPM. I'm just doing the math really quick, but that's something like a 13% differential from front tire RPM to rear tire RPM when you put 26" tires on the back.
Feb 28, 2009 | 09:36 PM
#13
On The Tree
Joined: Mar 2008
Posts: 147
Likes: 0
From: Toronto, ON, Canada
I get the message once in a while as well. Sometimes the computer senses low pressure in the bralke lines (???). In my case the dealer thinks it is because of how my maggie S/C is wired up. I wish I had more definite answers
Feb 28, 2009 | 10:09 PM
#14
They won't lock up. If anything, the truck will think the front tires are locking up and you'll keep rolling. This won't happen now though since you put your regular tires back on.
You have 4 wheel ABS, so the sensors expect each tire to rotate at the same RPM. I'm just doing the math really quick, but that's something like a 13% differential from front tire RPM to rear tire RPM when you put 26" tires on the back.
You have 4 wheel ABS, so the sensors expect each tire to rotate at the same RPM. I'm just doing the math really quick, but that's something like a 13% differential from front tire RPM to rear tire RPM when you put 26" tires on the back.
I have a video clip of it coming on. I did notice that the speedometer looked confused when it triggered.
Mar 1, 2009 | 08:42 AM
#15
On The Tree
Joined: Mar 2008
Posts: 147
Likes: 0
From: Toronto, ON, Canada
My OBDII reader didnt show anything after I recently got the message the first time.
Mar 1, 2009 | 12:16 PM
#16
Teching In
Joined: Sep 2008
Posts: 48
Likes: 0
From: Hesperia,CA
I have the same problem on mine ever since I got it after a while of driving the abs and braked light come on.never really worried about it, exept for one time when I had to slam my brakes on and the abs kicked on I guess and then the brakes wouldnt work, had to downshift to slow down and pulled into a parking lot waited a minute finally it started working again.
Mar 1, 2009 | 07:42 PM
#18
On The Tree
Joined: Mar 2008
Posts: 147
Likes: 0
From: Toronto, ON, Canada
OUCH!
I only get the message where the odometer reading usually is, I am not tripping the trouble lights, so it seems we have different problems, although I have not been running my truck into 5000+ rpms lately, with all this snow, etc.
I only get the message where the odometer reading usually is, I am not tripping the trouble lights, so it seems we have different problems, although I have not been running my truck into 5000+ rpms lately, with all this snow, etc.
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