Brake Warning Light On/Off issue

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Joined
Aug 31, 2025
Threads
2
Messages
7
Location
Kansas City
Good afternoon all,

Im having an issue with my Brake Warning Light being illuminated until the car is either warmed up or driven, which will cause the warning lamp to turn off.
The brake warning light is the only light on the dash, and the car has no active codes.

So far I have done/diagnosed the following per the service manual:
1. Replaced the Emergency brake switch.
2. Ensured the brake fluid level is close to max. (Pumped pedal 40 times, then filled to max line)
3. Tested the brake booster. (Turned off after 30ish seconds)
4. Replaced the IG1 Relay. (Located in the engine compartment. 4 terminals)
5. Cleaned the 3 connectors plus the brake fluid level sensor connector (I think that's what this is. Located at front of resevoir) with electronic cleaner.
6. Looked at all fuses associated with ABS system.
7. Replaced all 4 Rotors/pads, 6 new stainless steel brake lines, new dot 4 fluid and bled the system.

Does anyone have any insight as to what the issue could be? I am out of ideas at this point.

The Brake warning light is illuminated until the car is driven for 15-20 minutes, or the car idles for 15-20 minutes, in which case the light will turn off. I can turn the car off and back on, and the brake warning light will stay off. BUT, if the car is left off for more than 5 or so minutes, the brake warning light will turn back on.

Any ideas?
 
Are you referring to the red BRAKE light in lower right? or orange ABS light in lower left?
 
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