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How to Reset the Gearbox on a Smart 451?

Model: Smart Smart 451 - Years 2007-2015
Part: Warning light – error code

When the letter N flashes on the display of the Smart 451's instrument panel, it means there is a fault with the gearbox. To temporarily resolve this fault, you can engage the gear with the engine off. Then, with the gear engaged and the ignition key in position two, push the car so that it can start. Once the clutch is released during the pushing operation, the car will start. However, you should promptly go to a workshop to resolve the issue and avoid further damage.

Updated on 29 April 2026 by ScegliAuto

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How to reset the tyre pressure warning light on the Citroën DS4?

The tyre pressure warning light on the Citroën DS4 can be reset by inflating the tyres until they reach the corresponding pressure value, which is indicated on the sticker attached to the driver's door pillar. Once all tyres are at this value, turn on the ignition by inserting the key into the ignition switch; this should make the warning light disappear from the dashboard. If it does not reset, start the engine and drive to allow the sensors to read the new values.

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