Smart Fortwo will not start, issue remains unresolved on Smart Fortwo

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Smart Fortwo owners report experiencing starting issues due to common problems such as battery and starter failures. Other potential causes for a no-start situation may include issues with the alternator, ignition system, or fuel system. Many owners find it essential to check these components to identify the root cause of the starting problem. Additionally, some report that problems with the crankshaft rpm sensor can also lead to difficulties in starting the vehicle. In instances where the car does not start, it is often recommended to check the 12-volt battery and consider jump-starting the vehicle to determine if a new battery is needed. Furthermore, issues with the ECM not receiving proper signals from the engine or alternator can contribute to starting failures. If these troubleshooting steps do not resolve the issue, seeking assistance from a professional mechanic or a dealership that specializes in Smart vehicles is advisable.

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