• Always use the latest XENTRY Diagnosis software release with all available add-ons
Mercedes-Benz technical service bulletin NCU - 2026010004 for 2021 Mercedes-Benz E350, 2020 Mercedes-Benz GLC 350 E and 2020 Mercedes-Benz GLC 350 and others.
- Bulletin number
- NCU - 2026010004
- Component
- Electrical system
- Summary
- • Always use the latest XENTRY Diagnosis software release with all available add-ons. • Make sure to follow the operation steps exactly as described in XENTRY Diagnosis! • Use a battery charger to ensure sufficient power supply of the vehicle on-board electrical system battery (greater than 12.5 V). • If XENTRY Diagnosis is already connected to the vehicle, start with operation step 2. If two or more software updates or SCN coding’s are performed during one workshop visit or SCN coding operations are performed, operation items 02-4762 and 02-5058 must only be invoiced once for each workshop order! Work Procedure: 1. Connect XENTRY Diagnosis. 2. Update engine electronics (ME) control unit software. To do so, select menu item "Quick test view → N3/10 - Engine electronics 'MED40' for combustion engine 'M274' (ME) → Adaptations → Control unit update → Update of control unit software". Then follow the user guidance in XENTRY Diagnosis. 3. Disconnect XENTRY Diagnosis.
Owners of these vehicles have filed 6 complaints in the electrical category.
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