General symptoms of a faulty automatic transmission control unit
* Gear shifting problems:
* Delay or slippage during gear changes
*Shifting to the wrong gear
* No upshifting
*Emergency mode:
* The transmission switches to limp mode, limiting the number of gears used
*Transmission fault indicator lights up:
*Transmission fault indicator on the dashboard
* Jumps or jerks when shifting gears:
* Strong or unplanned jumps or jerks during gear changes
* Increased fuel consumption:
* Gear control failure may result in inefficient shifting, resulting in increased fuel consumption.
Additional symptoms:
* Strange noises from transmission:
* Humming, squealing or grinding noise coming from the transmission
*Transmission fluid leaks:
* Leaking transmission fluid may be a sign of internal damage to the automatic transmission control unit
* Problems with sensors:
* Faulty sensors can provide inaccurate data to the automatic transmission control unit, which leads to problems with gear shifting
* Electrical problems:
* Breaks or short circuits in the electrical system can disrupt the operation of the automatic transmission control unit