: Sit in the driver's seat with all doors and the hood closed.
, and the display will show the newly reset service interval (e.g., 15,000 km). Release the button and turn the ignition off. The process is complete! Method B: The "M" and "R" Button Method (Alternative)
Note: Some late-model W638 vans (post-2002 with full-digital odometers) may require a different button sequence, but 90% use the method below. vito w638 service reset
To reset the service indicator on a (typically models from 1996–2003), you can follow this manual sequence using the instrument cluster buttons. No diagnostic computer is required. Service Reset Procedure
The W638 is a classic workhorse, and these manual resets are common knowledge among owners who prefer DIY maintenance. If the simple button press doesn't work, ensure all doors and the hood are properly closed, as some Mercedes systems require this for service menu access. : Sit in the driver's seat with all
: Press and hold down the KM button while simultaneously turning the key back to position 2 .
: You will hear an acoustic beep, and the display will show the new remaining distance or time (e.g., 15,000 km or 365 days). Finalize : Release the button and turn the ignition off. Troubleshooting Common Issues The process is complete
Failing to reset the service light does not harm the engine, but it masks the next legitimate service interval. You might forget when the next oil change is due, leading to premature engine wear.
For owners who find the manual method frustrating, or for those with a failed trip button, an OBD2 scanner is the easy route. Here’s how to do a via the diagnostic port:
for about 10 to 15 seconds until a long beep is heard and the display updates. Troubleshooting Tips Timing is critical