STEP 1. Using scan tool MB991958, read CAN bus diagnostic trouble code.
(1) caution | To prevent damage to scan tool MB991958, always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool MB991958. |
Connect scan tool MB991958. Refer to "How to connect scan too (M.U.T.-III)
."
(2) Turn the power supply mode of the engine switch to ON.
(3) Check whether the CAN bus lines related DTC is set.
(4) Turn the power supply mode of the engine switch to OFF.
Is the DTC set?
Repair the CAN bus line (Refer to GROUP 54C, CAN bus diagnostics table ). Go to Step 2.
STEP 2. Using scan tool MB991958, read the diagnostic trouble code.
(1) caution | To prevent damage to scan tool MB991958, always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool MB991958. |
Connect scan tool MB991958. Refer to "How to connect scan too (M.U.T.-III)
."
(2) Turn the power supply mode of the engine switch to ON.
(3) Check whether the KOS-ECU related DTC is set.
(4) Turn the power supply mode of the engine switch to OFF.
Is the DTC set?
Diagnose the KOS-ECU. Refer to diagnostic trouble code chart . Go to Step 3.
STEP 3. Check the central door locking operation
STEP 4. Check the customization function.
STEP 5. Check with another registered keyless operation key.
STEP 6. Check of the troubles