INSPECTION PROCEDURE 2: Registering the Ignition Key is Impossible.: Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991223: Harness Set
MB991502: Scan Tool

STEP 1. Check the DTC 11.
Q: Does DTC 11 reset?

YES : Refer to DIAGNOSTIC TROUBLE CODE PROCEDURES .

NO: Replace the ignition key that cannot be registered. Then re-register the encrypted code (Refer to SPECIAL TOOLS ). Check that the ignition key can be registered. Then go to Step 2.
STEP 2. Retest the system.
Q: Is the malfunction eliminated?

YES : The procedure is complete. (If no malfunction are found in all steps, an intermittent malfunction is suspected. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .)

NO: Replace the immobilizer-ECU.