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Frequently asked questions about cars and motorcycles

How to reset the AdBlue warning light on a Mercedes vehicle?

Model: Mercedes Mercedes Various
Part: AdBlue warning light

All diesel Mercedes models have an AdBlue tank and its corresponding warning light. The AdBlue system warning light illuminates when the fluid level in the tank needs topping up, as it is insufficient for the vehicle's normal operation. Note that if you do not top up after a few miles, the car will no longer start. After topping up, you must also reset the warning light. To perform this maintenance, use a diagnostic computer connected to the vehicle via the OBD port. Once the computer is connected, follow its instructions to confirm the reset and clear the warning light.

Updated on 29 August 2026 by ScegliAuto

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How to Reset the Tyre Pressure Light on the Opel Grandland X

While driving, if you notice the tyre pressure warning light coming on, first check the actual inflation pressure of the tyres and, if necessary, restore the pressures recommended by the manufacturer. After restoring the correct pressures, you need to reset the warning light that has illuminated on the instrument cluster. To do this, locate the reset button on the lower central console. Press this button and hold it down for at least 3 seconds, after which the low pressure indication will turn off.

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