Three problems related to brake light on have been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
Anti lock brake module failed. Brake pedal would pulse on dry pavement even at speeds under 5 miles an hour but would fail to bring vehicle to a complete stop. Problem began as intermittent then would randomly go from pulsing but still stopping the vehicle to eventually the pedal going to the floor with no pulsing and no brakes whatsoever. Also, no brake warning light or antilock brake light. I kept the module and would be more than happy to send it to you for evaluation. Since I have replaced the module (last fall) I have had no further issues.
When turning I noticed that the vehicle started vibrating and the abs, esp, and traction control lights and also the brake light come on. My son drives this vehicle also and I am afraid the air bag is going to deploy.
The contact owns a 2008 Jeep Wrangler. While driving approximately 20 mph, the brake light illuminated on the instrument panel and the brake pedal dropped to the floorboard abnormally. The contact stopped the vehicle on the shoulder of the road and added brake fluid to the braking system. In addition, the air bag waning light was illuminated. The contact took the vehicle to the dealer where the technician stated there was a hole in the brake tube due to the steering shaft rubbing against the tube. The brake line would have to be replaced and the clock spring for the air bags was fractured and would also need replacing. The contact referenced NHTSA campaign id numbers: 08v202000 (service brakes, hydraulic:foundation components:hoses, lines/piping, and fittings) and 11v528000 (air bags:frontal) but was advised by the manufacturer that the VIN was not included in either recall. The brake line was repaired but the clock spring was not. The approximate failure mileage was 56,000.