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How to Reset the Maintenance Light on the Smart 450

Model: Smart Smart 450 - Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Part: Warning light – error code

See other generations:
Video tutorial

If you notice the maintenance light stays on when starting your Smart Fortwo 450 (year 1998-2007) despite having had a recent service, proceed with the following manual reset. First, enter the cabin and locate the small button at the rear of the dashboard.

Press and hold it while simultaneously turning on the instrument cluster. Then, turn it off and back on again.

Release the button and press it twice in quick succession. Once the light disappears from the display, turn off the cluster and you are done.


Updated on 12 August 2026 by ScegliAuto


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How to open the boot if it is stuck on a Mercedes B-Class?

On the Mercedes B-Class, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In this case, perform the emergency opening by following the simple procedure shown in this tutorial. First, unlock the locks with the remote control, then open the rear doors and, by operating the indicated lever, lower the backrest of the seat. Next, go inside the boot, locate the indicated gap, and manually unlock the lock using a small screwdriver.

Watch the video!


by ScegliAuto

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