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Reset Smart 450 Warning Light

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

How to reset the warning light on a Smart Fortwo? Check how to reset the light that appears on the instrument cluster. Turn on the instrument cluster with the key and check the warning light.

Press the button located near the steering wheel after turning off the instrument cluster. Keep the button pressed until the maintenance message disappears: turn on the instrument cluster and wait for the warning light to reset automatically.

Check the various information displayed on the instrument cluster of the car. Turn off the instrument cluster at the end of maintenance.


Updated on 8 April 2026 by ScegliAuto


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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.

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