91 Buick Century 2.5 L brake light on & battery light on

The Enhanced
Traction System
warning light may
come on for the
following reasons:


If you turn the system off by shifting to SECOND (2)
or FIRST (1), the warning light will come on and stay
on. To turn the system back on, shift to THIRD (3) or
AUTOMATIC OVERDRIVE (
). See “Enhanced
Traction System” in the Index.


If the Enhanced Traction System warning light
comes on and stays on for an extended period of
time when the system is turned on, your vehicle
needs service. Adjust your driving accordingly.


The warning light will come on when you set your
parking brake with the engine running, and it will
stay on if your parking brake doesn’t release fully.
If the transaxle shift lever is in any position other
than FIRST (1) or SECOND (2) and the warning
light stays on after your parking brake is fully
released, it means there’s a problem with the system.


If the traction control system is affected by an
engine-related problem, the system will turn off
and the warning light will come on.

TCC solenoid ,no . Crankshaft position sensor or ignition module maybe. . What engine does it have ? 2.5 or 3.3
Video's on youtube showing how to test

The parking brake switch might be stuck, have it checked out. is the brake releasing all the way?

Sounds like carbon build up on the ( IAC Valve ) idle air control valve. Take IAC valve off and get a can of non-chlronated brake cleaner and a wire brush and clean carbon out of valve.If this does'nt fix it take the mass air flow sensor off and do same but do'nt use wire brush just the cleaner.Afterwards reset the computer by taking the ground off the battery for 30 seconds or pull the ECM fuse out then put it back and this will reset the computer.HOPE THIS HELPS!!

You are low on brake fluid,Check your brake master cylinder.

Hello

The break light switch is down under the dash. Follow the brake pedal up and your hand will hit it. Release the tabs and slowly pull the connector out and the lights should turn off.

have a great weekend.

I just put in new fron pads in my 2000 buick century and the track off and the anti lock brake light and the service engine soon stays on

The crankshaft sensor is bad,or the ignition module,one of the two.

Check the brake fluid level.

If it's brake lights and not running lights, check switch at brake pedal.Follow arm up and you'll see a switch that arm pushes against when brakes are released.