DATE: January 18, 2008
Electronic Stability Control Disable Feature For Modified 4WD Vehicles
This bulletin involves selectively erasing and reprogramming the Anti-Lock Brake/Electronic Stability Module (ABS), the Cabin Control Node (CCN), and the Totally Integrated Power Module (TIPM) with new software. Once these modules have been reprogrammed (flashed), a sequence of steps will be required to disable or enable the vehicle Electronic Stability Program (ESP).
2007 (JK) Wrangler
NOTE: This bulletin applies to Four Wheel Drive (4WD) vehicles.
Vehicles modified with larger tires and/or suspension lifts may experience early Electronic Stability Program (ESP) activations as compared to a non-modified production vehicle depending on lift size/height, tire size, suspension changes and/or driving habits.
If early ESP activations are experienced while driving with a modified vehicle, the additional ability to permanently turn off ESP is available. This ESP permanently disable feature can be obtained once the ABS, CCN, and TIPM modules have been flashed / reprogrammed with the correct level of software, as described in the Repair Procedure.
After completing reprogramming of the modules, an ignition switch, steering wheel and ESP button maneuver must be performed to permanently disable ESP and to turn off the functionality of the ESP switch. Once the ESP system is placed into permanent disable
mode, the ESP Telltale will be illuminated in the instrument cluster, and the vehicle odometer will display a “ESP OFF” message. The ESP permanent disable feature DOES NOT disable the vehicle Anti-Lock Brakes (ABS) or the Brake Assist System (BAS), when the feature is implemented per this Service Bulletin Repair Procedure.
Repeating the ESP permanent disable maneuver procedure will return the system to normal ESP operation and restore ESP switch functionality allowing for ESP ”Full”, “Partial”, or “Off” modes.