The SMART car transmission is unlike any ordinary 5 or 6 speed automatic. It is an automated manual gearbox which means the vehicle can be driven as a manual or automatic at the flick of a button. The vehicle does not have a clutch pedal and instead operates on sensors and ECU’s.
The system consists of a clutch actuator assembly, a gear shift actuator assembly and a gearbox ECU. Each of the actuators will also have position sensors which send signals back to the gearbox ECU to determine which gear the vehicle is in or what position the clutch is in. This information along with vehicle speed and other parameters will be used by the gearbox ECU to calculate the required gear, when the next gear change should take place and when to engage / dis-engage the clutch.
As many SMART car owners are already aware, this design has many faults and can render the vehicle completely un-drivable.
Common Clutch + Gear Actuator Problems
When the clutch and gear actuators fail on the Mercedes SMART car it doesn’t always give the same symptom, below we’ve listed the most common fault symptoms we are aware of so far:
- 3 Bars / Lines Appearing on Gear Change Box
- Slipping Out of Gears
- Getting Stuck in Neutral
- Failing to Select Gears
If your clutch or gear actuator has failed then you may already be aware at exactly how much it can cost to replace the unit. Each actuator is coded to the vehicle and can cost upwards of £700+Vat each to replace with coding. Furthermore the replacement unit will only come with a standard 12 month warranty and being that it is such a common failing part, it doesn’t give much confidence that the problem won’t re-occur.
We receive clutch & gear actuators for repair on a daily basis for the following vehicles:
We have also compiled a short list of part numbers associated to the failing clutch & gear actuator units. Note this is not a complete list of part numbers, only the most common part numbers we frequently see in our workshops.
|000 3226 V011||01 3981 007 101|
|000 3226 V012||01 3981 000 022|
|000 3226 V014||01 3981 000 066|
|000 3226 V016||01 3981 000 070|
|A 451 250 00 62||A 454 257 05 79|
We specialise in the testing and repair of clutch + gear actuator units, not just for Smart cars but for all vehicle makes and models where the vehicles gearbox is controlled by electronic actuators. We’re able to fully bench test and repair the Smart car clutch actuator and gear actuator units. We use new genuine OEM parts when repairing the actuators to ensure each and every repaired clutch / gear actuator meets and exceeds OE specifications.
The repaired actuators will be returned to you with a Lifetime warranty for complete peace of mind and will not require re-coding when fitting back to the vehicle – simply plug & play!
If you have a Mercedes Smart Car with a clutch or gear actuator fault then give us a call today on 0844 847 9999.