E-Brake Came on at 70MPH

[nghtshd88]

I didn't know this was the e brake initially but I was cruising at 70 and approaching the toll booth when it felt like I got a flat and my car started jerking. It was coming from the rear and after the toll it was perfectly fine for about 35miles.

I parked it and like 8 hours later went back home with zero issues or warning lights. Everything looked fine, e brake sounded normal.

This morning I turn it on and the Service Brake message was on, I took the brake off and when I went to put it back on it wasn't steady clamping, it sounded like it kept switching on and off to clamp down before it stopped.

The message will not go away and is constantly lit up.

What could this be? Also why did it try to lock my wheels at 70mph?? It didnt stop trying until I came to a stop.

My brakes are still new, about 2700 miles on them. Last I looked, everything was great, cables are perfectly fine.

 

[LS4me]

Could be bad ABS module.

 

[joegr]

Clearly, it didn't lock your rear wheels. If it had, you'd probably be in the ditch.

Did the parking brake apply, or were you just getting the low brake fluid warning light. (It's the same light either way.)

 

[Kumba]

I had this happen once at about 45. After the rear end started to fishtail around and me trying to steer out of it the brakes finally let up right as I hit the dirt shoulder.

A blonde 9 year old thought it would be cute to poke and pull all the buttons and levers she could find in the car. Needless to say, the corrective action taken was to skip the movie we were going to see and go home.

Not sure if that applies to your situation though. :shifty:

 

[joegr]

I had this happen once at about 45. After the rear end started to fishtail around and me trying to steer out of it the brakes finally let up right as I hit the dirt shoulder.

A blonde 9 year old thought it would be cute to poke and pull all the buttons and levers she could find in the car. Needless to say, the corrective action taken was to skip the movie we were going to see and go home.

Not sure if that applies to your situation though. :shifty:

One of my kids pulled the brake switch on me once too. I had my foot on the gas and they only pulled it once, so it didn't apply. It just beeped and flashed a message on the message center saying to release and pull the brake switch again if I really wanted to apply the parking brakes.

I wonder what happens with the V6s since they don't have the message center?

 

[Kumba]

Yeah, I was coasting along and thought the beeping was one of her stupid games that she plays on the tablet. Nope!

 

[nghtshd88]

Ebrake was never pulled, has nothing to do with the fluid.

I have the service E brake light and it went off on its own.

 

[joegr]

There was a recommendation (I thought it was a TSB, but I can't find it) to replace the e-brake modules on any 04s that came in with the service e-brake light on when they were in warranty. Apparently there were some modules with bad programming or something like that. 04 was specifically mentioned and not 03 or 05 or 06.

 

[nghtshd88]

Well Warranty is over, is the module expensive or hard to replace? Not even sure what to troubleshoot on this.

Found this on marauder forum: Says it a known issue that on the LS a bad coil pack or coolant control value can cause this. Oddly the day before this happened I had a random P0430 code that hasnt come back and my coolant gauge didnt seem to read properly, then again it was extremely cold out.

"The coolant control valve is an electronic motor. Like all things electrical the creates some type of radio frequency. the EPB(electronic parking brake module) is very sensitive to RF(radio frequency) interference. The coils or the or coolant valve will feed RF interference to the CAN network which the EPB is on. As a result the EPB will set codes and lights because it doesn't know how to process the corrupt info."

Car runs perfect though, no misfires or anything like that, coolant control valve though scares me a lil..