HELP Brake light and Alarm (1 Viewer)

[ArvadaLC100]

Please help. Drove home about an house towing my camper. No problems. Back the camper in, no problem. Go to get dinner and after the computer checks everything out I have a brake light and alarm.

I plugged in my OBDII reader and no faults were recorded.

The brakes feel fine. I had to drive about 20 miles and had no issues.

Can someone point me in the right direction please.

 

[ArvadaLC100]

I will add it was really hot and I was in a bunch of stop and go braking.

Made the whole trip fine.

4 hours later the brake fluid is still REALLY hot. Can brake fluid get too hot?

 

[ton504]

A constant beeeeeeeppppp?

It could be the low accumulator pressure warning for your brake booster.

 

[ArvadaLC100]

Is that something that fails all of a sudden?

Also it is a 2001 with 190k

 

[ToHiHy]

Check your ABS relays. Might be a faulty one.

 

[Gixxer]

I got the same thing all of the sudden about a week ago. ABS and BRAKE light with the constant buzzer. Ended up being a faulty brake booster. Not a cheap fix. New PB booster/accumulator - master cylinder rebuid kit and I was back on the road.

 

[ArvadaLC100]

I don't have the ABS light. Just the brake light a buzzer.

 

[connorbray]

I don't have the ABS light. Just the brake light a buzzer.

Did you by chance figure out this issue? Mine is currently doing exactly what your had done. Thanks! 191k miles, 1999.

 

[2001LC]

First check fluid level. Read up on how to do this, direction are on reservoir! You may get lucky.

 

[JakeTheSnakeNH]

As I recall, some were experiencing similar symptoms after water intrusion in drivers side (windshield leak or sunroof drains). Lots of stuff passes through the area in the footwell corner.

 

[2001LC]

I've read about and experienced the water leak issue, also the TSB on right side cowling junction box. In those cases we generally see alarm when e-brake on. That said, water leak is certainly something to investigate by drying out (keep dry for a ~week)

 

[connorbray]

First check fluid level. Read up on how to do this, direction are on reservoir! You may get lucky.

I tired this, unfortunately i'm not lucky enough this time.

 

[connorbray]

As I recall, some were experiencing similar symptoms after water intrusion in drivers side (windshield leak or sunroof drains). Lots of stuff passes through the area in the footwell corner.

So your saying water damage on the drivers side footwell corner could be the cause of the E-Brake light and alarm? Because I do have a tremendous about of water leakage around there, I believe from the sunroof being unable to open and the drains being clogged.

 

[JakeTheSnakeNH]

So your saying water damage on the drivers side footwell corner could be the cause of the E-Brake light and alarm? Because I do have a tremendous about of water leakage around there, I believe from the sunroof being unable to open and the drains being clogged.

Worth looking into if you definitely have water intrusion. There are a few posts talking about "electrical gremlins" due to windshield or sunroof leaks, here's one:
Help! Door ajar indicator and door chime

 

[Spike555]

My front passenger sunroof drain was clogged, everytime it rained or I hit the carwash I'd have problems until everything dried out.
Water was backing up and dripping onto the computers behind the passenger kick panel shorting them out, I was literally ready to sell the truck, one last ditch effort and figured it out.
Cleaned the drain, no problems since.
You need to seal your sunroof, if you cannot get it open to clear the drains, seal it shut, marine grade silicone. Then once everything dries out...you should be good.

 

[connorbray]

My front passenger sunroof drain was clogged, everytime it rained or I hit the carwash I'd have problems until everything dried out.
Water was backing up and dripping onto the computers behind the passenger kick panel shorting them out, I was literally ready to sell the truck, one last ditch effort and figured it out.
Cleaned the drain, no problems since.
You need to seal your sunroof, if you cannot get it open to clear the drains, seal it shut, marine grade silicone. Then once everything dries out...you should be good.

Is it worth not sealing and just clearing the drains and DIY fixing the sunroof?

 

[Spike555]

Is it worth not sealing and just clearing the drains and DIY fixing the sunroof?

Yes, if you can get it open and get the drains cleared. If you cannot get it open and do not care about the sunroof I'd seal it from the outside so no water can get in, then it will dry out in a week or so.
If you get the drains cleared it's still going to take a week or so for everything to dry out.

 

[connorbray]

Had it diagnosed, came back with this.

Photo Attached.

 

[Spike555]

And? Of course it's going to throw fault codes if the computers are shorted out.
You honestly cannot know anything until the water issue is resolved, otherwise you'll be throwing money into the wind.

With the diagnostic help I recieved I replaced my battery, alternator, ignition switch, various relays and fuses. All told I spent $500? throwing parts at it because it was diagnosed as "this is bad" "that needs to be replaced" I did all the work myself, but the time and money I could have saved if only I had known that the sunroof drain was clogged.

You can replace everything you want, but until the water issue is resolved you are wasting your time and money.

 

[connorbray]

And? Of course it's going to throw fault codes if the computers are shorted out.
You honestly cannot know anything until the water issue is resolved, otherwise you'll be throwing money into the wind.

With the diagnostic help I recieved I replaced my battery, alternator, ignition switch, various relays and fuses. All told I spent $500? throwing parts at it because it was diagnosed as "this is bad" "that needs to be replaced" I did all the work myself, but the time and money I could have saved if only I had known that the sunroof drain was clogged.

You can replace everything you want, but until the water issue is resolved you are wasting your time and money.

I wasn't saying anything by the post, Just simply what the diagnosis came back as. Drying out everything is the next plan! however was simply drying it out enough to fix your issue, no damage that needed to be replaced from the water dripping onto everything?