Brake light on dash

[Jorge___vasquez]

Hey guys, this is my first post. So I have a 1999 Jeep Wrangler tj Sahara 4.0 automatic. It had a Dana 35 and 30. I found another Sahara but it’s a 2000 4.0 5 speed and came with a Dana 44 and 30. I swapped the differentials from the 2000 to the 1999. The 2000 came out good, no lights on dash, all breaks work. On the 1999 my “brake” light turned on right after the swap. My breaks are working well, not sure where I went wrong. The 2000 has abs and the 1999 doesn’t. The break fluid is full as well

 

[Rook]

You need to go over your work and check everything. First of all, make sure you bled the system properly. Second, make sure you don't have any loose connections, leaking brake lines, etc.

I am by no means the brake expert around here, that's @mrblaine. Maybe he'll have some thoughts on it.

 

[Chris]

Any chance the parking brake is stuck on?

 

[Imapepper]

Try smashing the brake pedal a few times hard, pressure differential valve may need to be reset.

 

[Jorge___vasquez]

I’ve tried messing with the e brake handle, I don’t think it’s stuck, I park down hill then put the e brake and then take it off and works good.

Do you mean smashing on the breaks while driving or just parked?

 

[Chris]

Do you mean smashing on the breaks while driving or just parked?

I would try both personally.

 

[Jorge___vasquez]

Any chance the abs has to do anything with it? The 2000 has abs, 1999 (with the brake light on) doesn’t have abs

 

[Jorge___vasquez]

So I tried slamming on the brakes while park and It did the trick haha
Thanks for the help!

 

[mrblaine]

So I tried slamming on the brakes while park and It did the trick haha
Thanks for the help!

Always bleed the brakes with the parking brake off and the key on.

 

[Chris]

So I tried slamming on the brakes while park and It did the trick haha
Thanks for the help!

Glad you got it figured out!

Always bleed the brakes with the parking brake off and the key on.

I understand the parking brake being off, but what's the reason for the key being on?

 

[mrblaine]

Glad you got it figured out!



I understand the parking brake being off, but what's the reason for the key being on?

So you can see the brake light on the dash tell you when you are having a problem.

 

[Chris]

So you can see the brake light on the dash tell you when you are having a problem.

Duh. Makes perfect sense now.

 

[StG58]

The nuggets of wisdom we learn from @mrblaine. Priceless, and he just kinda' casually drops them here and there. Gotta love that!

 

[KCsTJ]

So I tried slamming on the brakes while park and It did the trick haha
Thanks for the help!

Wow that's crazy, what an easy fix. See how valuable this forum is?

 

[edub1379]

Same issue on my '92 YJ. Stomped on the brakes a few times, brake light turns off. Problem is that the light comes back on next time I tap the brakes. Any suggestions?

 

[Jon Wildes]

Same issue on my '92 YJ. Stomped on the brakes a few times, brake light turns off. Problem is that the light comes back on next time I tap the brakes. Any suggestions?

Any fix for this yet.

 

[Astro]

Thanks guys, just changed my axle and was having the same issue, couple stomps later and the lights gone!

 

[Humble outdoorsmen]

You need to go over your work and check everything. First of all, make sure you bled the system properly. Second, make sure you don't have any loose connections, leaking brake lines, etc.

I am by no means the brake expert around here, that's @mrblaine. Maybe he'll have some thoughts on it.

I'm having same issue. Ima try these steps see what happens

 

[Mick92906]

Glad you got it figured out!



I understand the parking brake being off, but what's the reason for the key being on?

There’s no way this just worked for me!!! Cheers Chris!