The Smart Fortwo Mk3 (W453) (2015-2024) was the final petrol-and-electric two-seater, sharing engineering with Renault while keeping the iconic ultra-short body and tight turning circle. As with all modern cars, servicing this Smart leaves a few electronic counters that want resetting. You may need a service reset to clear the maintenance light, an oil service reset after an oil change, a TPMS reset to settle the tyre pressure warning, and a brake pad wear reset when new pads are fitted. A replaced 12V battery often needs registering, and disconnecting power can call for window re-initialisation. Pick the Smart Fortwo procedure relevant to your repair from the choices below.