NHTSA Complaint #11469193 — 2011 JEEP GRAND CHEROKEE

Malfunction of the engine RPM governor, adaptive cruise control, or Electronic Throttle Control (ETC), or some combination of all of the above. On June 7-9, 2022, spontaneous high engine RPM occurred, which resulted in vehicle speeds that were above urban speed limits unless heavy braking pressure was applied. Additionally, on rural highways, the speed setting for the adaptive cruise control was exceeded without driver input. This also required manual breaking in order to control speed. During this situation, the “driver override “ message would appear although no accelerator pedal pressure was being applied. Additionally, the ETC warning light would randomly light up and then clear. When the vehicle was stopped and placed in park, the engine would rev to approximately 4000-5000 RPM. Especially in congested traffic conditions, this runaway engine RPM condition is a terrifying situation. This malfunction has occurred on this vehicle before, and to a similar extent. However, the Jeep dealer could find no underlying cause. The vehicle will also occasionally operate at a higher than normal RPM, but not to the extent described here. I do have an appointment with my local Jeep dealer for June 21. I will describe the issue with them in detail. My purpose for entering this report is to add my issue to any potential list of other Jeep owners who may have reported a similar issue.