Brake Antilock Wheel Speed Sensor Problems of Jeep Grand Cherokee

2005 Jeep Grand Cherokee. Consumer writes in regards to check engine and brake system warning light stays on, vehicle starts then locks up, replacement of the right rear speed sensor and four wheel drive motor.

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The contact owns a 2008 Grand Cherokee. The contact stated that while driving 35 mph, the anti lock braking light illuminated. The vehicle was taken to an authorized dealer, who stated that a rear anti lock braking speed sensor malfunctioned, causing the failure. The dealer also stated that the light indicated that the braking system would not function due to the speed sensor reading inaccurately. In addition, the dealer stated that if the vehicle was driven during rainy weather, it could be very dangerous. The anti lock braking sensor was replaced. After the repairs, the same failure occurred on the front passenger speed sensor. The contact stated that the vehicle was unsafe to drive due to the faulty speed sensors. The failure mileage was 47,000. The VIN was unavailable.

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99 Jeep Grand Cherokee with engine problems customer states that the rpm's would immediately go up to the 200 or sometimes higher as soon as he starts up the car and also accelerate when the brakes are applied* the consumer stated various parts were replaced, however the problem returned. The consumers wife was driving, when all of a sudden the vehicle started to accelerate on its own, she applied the brakes as hard as she could, however the vehicle continued to proceed in a forward motion. The only solution was to place the vehicle into park. After placing the vehicle in park, the consumers wife placed it in drive again and immediately it started to accelerate uncontrollably. Applying the brakes with full force did not solve the problem. When aaa arrived and started the vehicle, nothing happened. The sudden acceleration happened again while the consumers daughter was driving. During one of the sudden acceleration incidents, the consumers wife was injured. The right front wheel speed sensor was replaced. The coolant radiator fan relay and water pump were replaced. The air bag light was on, the transmission seal was leaking. The fuel pump was replaced. The right and left hub bearing were replaced.

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Consumer was experiencing ongoing problem with intermittent brake failure which would leave the vehicle totally without brakes. Dealer finally learned the problem was due to a failure in the abs speed sensor which was obtained from the manufacturer's technical dept. Problem fixed.

See all problems of the 1998 Jeep Grand Cherokee 🔎.