Mopar alarm and no-start
2011 Ram 2500 Laramie trucks (and other Chrysler vehicles built prior to May 9, 2011) may experience an intermittent theft alarm activation accompanied by a no-start condition. Multiple attempts may be required to start the engine.
Affected vehicles include Town & Country, Grand Caravan, 2500 pickup, 1500 pickup, 3500 pickup, Wrangler, Nitro, Liberty, Cherokee, Grand Cherokee and Durango (all equipped with security alarm systems).
Flash reprogramming is necessary, using wiTECH software version 12.01 or higher.
- Using a scan tool (wiTECH) with the appropriate diagnostic procedures available in TechCONNECT, verify that no DTCs are set. If DTCs are present, record them and repair as necessary before proceeding.
- In the System Test tab of wiTECH, record the ‘Last VTA Trigger’ cause.
- If the ‘Last VTA Trigger’ is equal to 1 (right rear door), perform the repair procedure. If not, proceed to Step 4.
- If DTCs U0010 and U0001 are present n the TIPM, perform the repair procedure. If not, this bulletin does not apply. Perform further diagnosis.
- Flash reprogram the TIPM. Help using the wiTECH diagnostic applications for flashing the TIPM is made available through the wiTECH diagnostic application. For instructions, select the “HELP” tab in the upper portion of the wiTECH window, then “HELP CONTENTS.” This will open the Welcome to wiTECH Help screen where help topics can be selected.
- Clear any DTCs that may have been set in other modules due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow the tech to clear them.