Contents: Transmission fluid leak ↳ Transmission fluid is brown or has a… ↳ Downshift not possible when… ↳ Main faults in the gear selection… ↳ Engine does not start when in gear,… ↳ Transmission slippage, rough… ↳
Note: Due to the complexity of the automatic transmission, it is not possible for the owner to check and service it. For problems not described below, the vehicle should be taken to a dealer or an automatic transmission specialist. Do not rush to remove the transmission if you suspect a problem, as most checks can be performed without removing it from the vehicle.
Transmission fluid leak
- Transmission fluid is usually dark in color. Leaks should not be confused with engine oil, which can easily be carried into the transmission by air flow.
- To locate the source of the leak, remove all dirt from the transmission housing and surrounding area using steam or a degreaser. Drive the car at low speed so that the air flow does not carry the leaking fluid away from the source of the leak. Raise and support the car and locate the leak. The most common leak locations are:
- a) Joints with the body (Chapter 1 and 7B).
- b) Dipstick connection (Chapter 1 and 7B).
- c) Pipes/connections of transmission to working fluid radiator (Chapter 3 and 7B).
- d) Speedometer drive gear sealing ring (Chapter 7B).
- d) Transmission oil leak from the differential outlet seals (Chapter 7B).
Transmission fluid is brown or has a burnt odor
- Low transmission fluid or need to be replaced (Chapter 1).
- Cm. chapter 7B, which describes the procedure for checking and adjusting the automatic transmission selector cable.
Downshift not possible when accelerator pedal is fully depressed
- Low transmission fluid level (Chapter 1).
- Incorrect adjustment of the gear selector cable (Chapter 7B).
- Engine Management System Malfunction (Chapters 1, 4, 5, 6).
Main faults in the gear selection mechanism
IN chapter 7B the procedure for checking and adjusting the automatic transmission selector cable is described. The most common faults caused by a poorly adjusted selector are:
- a) Starting the engine in gears other than "Park" or "Neutral".
- b) Discrepancy between the indication of the engagement of any gear and the gear actually engaged.
- c) The vehicle is moving while the "Park" or "Neutral" mode is on.
- d) Unreliable or incorrect gear shifting. For selector cable adjustment, see. chapter 7B.
Engine does not start when in gear, or starts in gears other than Park or Neutral
- Incorrect installation of the selector lever position microswitch (Chapter 7B).
- Incorrect adjustment of the selector cable (Chapter 7B).
Transmission slippage, rough shifting, noise or no rotation in forward or reverse gears
There are many possible causes for the above malfunctions, but the car owner can only do one thing - the fluid level. Before sending the car to a service station, check the level and condition of the fluid (see Chapter 1). Top up or replace fluid as needed. Perform an on-board troubleshooting tool check as recommended in chapter 7B. If you cannot fix the problem, contact a specialist.