MB Medic Mercedes-Benz Repair Guides, Service, How To DIY
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How to Open the Mercedes-Benz Hidden Menu
Close the driver’s door and turn the ignition to position 1. Display the speed or outside temperature in the instrument cluster. Press the cluster reset button three times. When the service menu appears, use the steering wheel buttons to scroll through the available information. Menu names and controls can vary by model and instrument cluster version.
From the hidden menu you can:
- Turn off ESP
- View battery voltage
- Check engine oil quantity
If you switch ESP off this way, switch it back on before you drive normally. The battery voltage reading is a quick first check before you chase a battery drain problem, and the oil quantity reading saves checking the oil level by dipstick.
Tested On
- CLK-Class (W209), 2004 to 2009: CLK320, CLK500
- C-Class (W203), 2001 to 2007: C230, C320, C240, C280
- E-Class (W211), 2004 to 2009: E320, E350, E500
Video
This video shows the hidden menu on a GL-Class (X166), which has a newer cluster, so the button sequence may differ from the steps above.
For the regular cluster settings (clock, headlight delay, temperature and speed units), see how to change the instrument cluster settings, and for what the ESP warning light means, see the Mercedes ESP light explained.
Before you buy parts, scan every control module, not just the engine. It shows the root fault behind the warning lights and tells you whether the problem is still active. See how to do a full health check.
