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PANIC ALARM TSB Revision CHASSIS ELECTRICAL 54A-885 STEP 2. Using scan tool MB991958, read the diagnostic CAUTION To prevent damage to scan tool MB991958, always turn the YES <vehicles with KOS> : Troubleshoot the KOS (Refer to GROUP 42B, KOS ). YES <vehicles with WCM> : Troubleshoot the WCM (Refer to GROUP 42C, WCM NO : Go to Step 3. STEP 3. Check keyless operation system <KOS> or system <WCM> work normally? ). NO <vehicles with WCM> : Troubleshoot the WCM (Refer to GROUP 42C, WCM STEP 4. Using scan tool MB991958, check the the "Panic alarm switch" is set to "Enable". (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Replace the ETACS-ECU. the "Panic alarm switch" to "Enable"(Refer to ). ZC501967 AC404789 AC702802 MB991824 MB991827 MB991910 Data link connector AB |