Symptoms of a faulty automatic transmission selector:
* Difficulty shifting gears.
* The transmission does not start or starts with a delay.
* The transmission spontaneously switches to neutral.
* The gear indicator on the instrument panel flashes or does not light up.
* Error codes appear on the instrument panel.
Causes of malfunction:
* Mechanical damage to the selector (wear, deformation).
* Electrical faults (broken or short circuited wiring).
* Failure of the electronic control unit (ECU) of the gearbox.
* Problems with the hydraulic system of the gearbox (fluid leakage, clogged channels).
* Worn or dirty gear shift cable.
Diagnostics and troubleshooting:
Diagnosing and troubleshooting an automatic transmission selector requires professional knowledge and equipment. Therefore, it is recommended that you contact a qualified mechanic.
Diagnostics includes:
* Inspect and check the selector for damage.
* Checking electrical connections and wiring.
* Scan error codes using a diagnostic scanner.
Troubleshooting may include:
* Replacement of a mechanically damaged selector.
* Repair or replacement of electrical components.
* Reprogramming the transmission ECU.
* Correction of problems with the hydraulic system (fluid replacement, channel cleaning).
* Adjusting or replacing the gear shift cable.