91FJ 80 Brake light on dash stays on... (1 Viewer)

[GorgeFJ80]

Hi, I am perplexed, as my 91FJ 80 Brake light on dash stays on dimly even though the parking brake is not set? Any ideas? Thanks!

 

[sterling]

Hows the brake fluid?

is it full?

 

[BamaPaul]

Check to see if the hand break is barely pulled up.

typed badly on my iPhone using IH8MUD

 

[GorgeFJ80]

Yes full brake fluid & E-brake handle seems to be ok.
Light is dim & intermittent. When E-brake is on it is full bright & constant.

Pulled connector on fluid reservoir & the light goes out ..... bad connection at reservoir?

Thanks!

 

[CJF]

Pulled connector on fluid reservoir & the light goes out ..... bad connection at reservoir?

Good news: You diagnosed the problem perfectly.

Bad news: It's the sensor/cap itself (semi-common problem). Time for a new one.

 

[BamaPaul]

Good news: You diagnosed the problem perfectly.

Bad news: It's the sensor/cap itself (semi-common problem). Time for a new one.

Agreed. Here is a post on the possibile causes of the 3/4 brake light. https://forum.ih8mud.com/80-series-...y-brake-indicator-light-has-mind-its-own.html

 

[GorgeFJ80]

Thanks guys .... I found the other thread finally & looks like thats it.

Will let you know how it turns out after replacing the cap...

Thanks again.

 

[GorgeFJ80]

Update:

First off - having trouble finding the part through parts stores ... is this a dealer only item?

Second, kind of weird coincidence(or not...)? Driving down the highway with cruise control engaged & no light on dash. Cruise control kicks off & dash light comes on! ... is it possible this is vacuum related & I'm chasing the wrong problem with this reservoir cap?

THanks!

 

[CJF]

Driving down the highway with cruise control engaged & no light on dash. Cruise control kicks off & dash light comes on! ... is it possible this is vacuum related & I'm chasing the wrong problem with this reservoir cap?

You've got the cause and effect backwards: The Cruise control is kicking out *because* the light came on, just like it's supposed to.

And yes, it's likely a dealer only item. Price it out and then decide whether you want it or not; you can choose to just leave it unplugged if you like.

 

[GorgeFJ80]

You've got the cause and effect backwards: The Cruise control is kicking out *because* the light came on, just like it's supposed to.

And yes, it's likely a dealer only item. Price it out and then decide whether you want it or not; you can choose to just leave it unplugged if you like.

Ahh! .... makes sense - like tapping the brake pedal ....great I will just replace that cap then!

 

[arharroz]

This post was very helpful. Thank you very much

 

[arharroz]

Please let me know where you end up finding the part and how much it was. Thanks

 

[CJF]

Part is from the dealer.

Are you in the US?

Welcome,

Curtis

 

[Offroads4x4]

Have you tried to clean the electrical connection with a good Electrical Cleaner and then use Dielectric Grease on the connection to see if that resolves your issue?