Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Reset the Automatic Gearbox of the Smart?

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

When the letter N flashes on the Smart's instrument cluster, it indicates a fault in the vehicle's automatic gearbox. To temporarily resolve this issue, engage the gear while the engine is off. Then, with the gear engaged and the ignition key in position two, push the car so that it can be started. Once the clutch is released during the pushing operation, the car will start. However, you should promptly visit a workshop for a diagnosis to identify the cause of the fault, which is often electronic in nature.

Updated on 15 September 2026 by ScegliAuto

Video tutorial

Related tutorials

How to Use the Automatic Gearbox on the Smart Fortwo
How to Use the Automatic Gearbox on the Smart Fortwo
Smart (2007-2015 / 451) Today's guide will briefly explain how to use the automatic gearbox on the Smart Fortwo, following these simple and quick steps. First, get in the ve…
How do you reset the automatic gearbox of the Smart Brabus?
How do you reset the automatic gearbox of the Smart Brabus?
Smart (2007-2015 / 451) In order to reset the automatic transmission of the Smart Brabus, you need to connect a diagnostic tool to the OBD port of the vehicle: this port can…
How do you reset the automatic transmission of the Smart car?
How do you reset the automatic transmission of the Smart car?
Smart (2007-2015 / 451) On the Smart Fortwo, when the flashing letter N appears on the instrument panel, it means that there is a problem with the automatic transmission. To…

Other guides you may be interested in

    Frequently Asked Questions

    • Smart 2007-2015 - Why did all the lights in the Smart ForTwo come on? Read answer
    • Smart 2014-2022 - What does the warning light with an exclamation point and a triangle on the Smart 453 mean? Read answer
    • Smart 2007-2015 - What does the yellow triangle light with exclamation mark on a Smart ForTwo mean? Read answer

How to Reset the Central Locking of the Volkswagen Golf 4?

If the central locking system of the Volkswagen Golf 4 is not working, it is likely necessary to reset the system: to do this, open the driver's door and detach the side panel of the dashboard next to the steering wheel. Under this panel, you will find the fuses, including the one for the central locking, which is indicated in the manual as number 14. To reset the system, remove this fuse from its housing, then reinsert it or replace it with a new one of the same amperage: this will reset the central locking system.

Watch the video!


by ScegliAuto

More videos