- Engine / equipment
- smart fortwo and forfour 453 (petrol and electric EQ)
- Period mentioned
- 2014–2024
- Symptoms
- A flat 12 V battery on 2015–2016 cars (no lights-on warning); at inspection, suspension, rusting brakes and lights (and on petrols, oil leaks and a rusty exhaust); electronic faults (radio, a pedal sensor that upsets the stop-start); on the forfour, an emergency-call assistant that does not work.
- Possible cause described
- CarWiki rates the technology as very reliable. Recalls (KBA): the link between the P selector cable and the gearbox, a handbrake cable nut that could come loose and front steering knuckles that could break due to a manufacturing fault.
- Check for the garage
- Test the 12 V battery; brake hard now and then (especially on the EQ); check campaigns by VIN.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Smart
12 V battery, brakes and campaigns on the smart 453 (EQ too)
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
Test the 12 V battery; brake hard now and then (especially on the EQ); check campaigns by VIN.
What are the symptoms?
A flat 12 V battery on 2015–2016 cars (no lights-on warning); at inspection, suspension, rusting brakes and lights (and on petrols, oil leaks and a rusty exhaust); electronic faults (radio, a pedal sensor that upsets the stop-start); on the forfour, an emergency-call assistant that does not work.
Which cars and years does it affect?
- Brands
- Smart
- Engine / equipment
- smart fortwo and forfour 453 (petrol and electric EQ)
- Period mentioned
- 2014–2024
Taking it to a garage?
Models with this entry
- Smart fortwo / forfour (453)2014–2024
Other entries for these makes
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- mhd belt, timing chain, exhaust and automated gearbox on the smart fortwo 451Smart
- Automated gearbox, engine management and battery on the smart forfour 454Smart
- Roadster 452: water leaksSmart
- Single clunk from the rear drive shaft when moving off or changing direction (smart and Mercedes-Benz)Smart · Mercedes-Benz
- Rear middle seat belt and eCall on the smart #1Smart
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