Inspection Procedure 2

TECHNICAL DESCRIPTION (COMMENT)
The transponder built-in ignition key or the immobilizer-ECU is suspected to be defective.

TROUBLESHOOTING HINTS
- Malfunction of ignition key
- Malfunction of immobilizer-ECU

DIAGNOSIS
Required Special Tools:
MB991223: Harness Set
MB991502: Scan Tool (MUT-II)

Check the DTC 11.
If DTC 11 reset, refer to DTC 11.
If DTC 11 does not reset, replace the ignition key that cannot be registered. Then re-register the encrypted code.
Check that the ignition key can be registered.