Clutch Actuator Smart Fortwo (451)

The clutch actuator with OE code A4512500062 is an electromechanical component installed on Smart Fortwo series 451 models, produced between 2007 and 2014. Its task is to automatically manage the clutch control in vehicles equipped with a robotic gearbox. The actuator receives impulses from the gearbox control unit and converts them into mechanical movement to disengage and re-engage the clutch without driver intervention. It is a fundamental element to ensure the smooth operation of the automated transmission system typical of Smart city cars.

Technical characteristics

The actuator A4512500062 consists of a main body made of die-cast aluminum inside which are located:

• A direct current electric motor
• A worm gear transmission group or epicyclic reducer
• A thrust cylinder with integrated position sensor
• A multi-pole electrical connector for communication with the clutch control unit

The component is designed to withstand continuous actuation cycles under varying temperature and load conditions. It can operate with synthetic oil or special grease depending on the version. It is compatible with the vehicle's CAN interface and constantly communicates the piston position for proper clutch control.

DIPA offers a range of original and aftermarket spare parts of equivalent quality.

Functionality

The function of the clutch actuator OE A4512500062 is to replace the traditional pedal control in vehicles with electro-actuated automatic transmission. When the driver selects a gear, the control unit sends an electrical impulse to the actuator, which through its internal motor regulates the disengagement and subsequent re-engagement of the clutch. This process takes place in a few milliseconds and allows smooth gear changes by modulating the engagement point based on the torque required and engine speed. The internal sensor provides continuous feedback to optimize clutch opening and closing. The system works in synergy with the gearbox and engine control modules.

Brand and model on which the part is mounted

Smart

• Fortwo Coupé
• Fortwo Cabrio

DIPA recommends always verifying compatibility based on the specific engine code and chassis number.

Defects and causes

The clutch actuator A4512500062 can malfunction over time, especially if subjected to repeated cycles or harsh environmental conditions. The most common defects include:

• Failure of the internal electric motor: the motor does not properly actuate the rod, causing difficulties in gear changes
• Mechanical wear of the reducer group: excessive play or transmission locking
• Malfunction of the position sensor: the control unit does not receive correct data and blocks the clutch function
• Seal leakage or infiltration: ingress of moisture or oil compromising the electronics
• Electrical error in the connector: false contacts or short circuit

Symptoms include: transmission warning light on, "transmission fault" message, gears not engaging, irregular behavior during start or downshifting.

Possible associated DTC codes

In case of failure of the clutch actuator A4512500062, electronic diagnosis may detect the following DTC codes:

• P1751: clutch actuator electrical fault
• P1757: actuator position error
• P0724: incorrect signal from clutch actuator or missing command
• P2710: clutch actuator not functioning or inconsistent signal

The presence of these codes indicates an anomaly localized in the automated clutch management and requires functional verification of the actuator and wiring.

Final conclusions

The clutch actuator with OE code A4512500062 represents an essential element for the correct operation of the automatic transmission system in Smart Fortwo series 451 vehicles. Its function of activating and controlling the clutch without driver intervention is made possible thanks to a precise mechanism integrated with the vehicle's electronic network.

DIPA offers a wide range of spare parts: from original to aftermarket selected among the best manufacturers on the market. Not only that: it offers reconditioned components with performance equivalent to new, allowing savings on replacement and contributing to environmental protection through circular economy. Also ask for the availability of reconditioned parts ready in stock for quick interventions without waiting times.