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Frequently asked questions about cars and motorcycles

How to Activate the Rev Counter on the Smart 453?

Model: Smart Smart 453 - Years 2014-2022
Part: Checks and maintenance

To activate the rev counter on the Smart 453, you need a computer connected to the car's ECU via its OBD port. It must be activated using a Mercedes scanning program: this process is not straightforward, so it is advisable to visit an authorised workshop to perform the activation of the car's rev counter. Once the operation is completed, you can disconnect the computer from the OBD port and check the correct functioning of the rev counter. The cost of such an operation may vary depending on the workshop.

Updated on 28 April 2026 by ScegliAuto

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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.

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