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Used BMW 3 Series ECU Transmission Control Unit

All used BMW 3 Series ECU Transmission Control Unit listed on Breakeryard.com are tested, original (OEM) manufacturer parts and come with a 14 day money back guarantee. Breakeryard.com list cheap new OES or aftermarket car parts at discounted prices or used OEM car parts up to 80% cheaper than main dealer prices for BMW 3 Series from premium breaker yards from across the UK.

About ECU Transmission Control Unit

The 3 Series BMW ECU transmission control unit is an on-board computer which electronically controls the transmission of the vehicle. TCUs can be separate from, or in this case, attached to the ECU. The 3 Series BMW ECU Transmission Control unit contacts sensors that are placed around the vehicle to receive data in order to accurately calculate when to change gears and which gear to use as well as improve fuel economy and drive quality.

These sensors include the vehicle speed sensor, the wheel speed sensor, the throttle position sensor, the turbine speed sensor and the transmission fluid sensor. The TCU also uses data sent from the ECU. This controls and maintains the efficient running of the engine as well as scanning for any abnormalities in its function.

If a 3 Series BMW ECU transmission control unit begins to fail, you may notice a loss of power, error message or difficulty in changing gears. This problem can be intermittent at first, and can sometimes be rectified temporarily by turning off your car and turning it back on again after a short while. Ultimately though, any damage to a 3 Series BMW ECU transmission control unit will need to be repaired to correct the fault.

BMW 3 Series trivia

  • If you bought an early 3 Series M Sport and kept it in working condition, they can sell today for up to £77,500.
  • The G20 BMW 3 Series is the first of the line to come with its own personal assistant., By saying, “Hey, BMW,” you can control your G20 using voice commands only! It’s also the first BMW 3 Series to not have a handbrake.
  • The E46 3 Series is the best selling BMW in the world. There has been an impressive 3,266,885 sales of the E46, an incredibly high number for what is, ultimately, a luxury car.
  • The BMW 3 Series was first launched in 1975 to replace the 02 Series, which was one of the most popular high-end cars in the world at the time.
  • Although the E21 sold around 1.36 million units, that seems insignificant compared to the E30 3 Series that launched in 1982 and sold 2.2 million units!