Red Brake Light/Low Brake Fluid Message On Intermittently - keywords brake DIC display fluid information int intermittent lamp light low message on red sensor warning

This PI was superseded to change the wording of the repair kits. Please discard PIC3956B.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

A customer may comment about a intermittent RED brake light coming on with a possible message on the Driver Information Center (DIC) displaying "low brake fluid".

This condition is more likely to occur during cold weather and will be intermittent as the fluid is more viscous

Follow the diagnostics to check and make sure that the brake fluid in not low. If the brake fluid is NOT low then replace the brake Master Cylinder assembly (P/N below) as it has been modified to resolve this concern.

Automatic Transmission

Master Cylinder Brake Fluid Reservoir KIT Part # 15939572

Manual Transmission

Master Cylinder Brake Fluid Reservoir KIT Part # 15939485

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.