Transmission Issues
The automatic transmission in automatic cars usually only goes in reverse whenever a component becomes damaged or fails. Transmission is most likely the cause of the car only being able to go in reverse. Check the gear shifter if your vehicle does not function in one or more gears. It’s possible the gear cable could be stretched beyond normal length, requiring an adjustment. Issues with most inner components will call for professional attention.
Speed Sensor
Even a simple component, such as a speed sensor, can obstruct the car’s transmission system. This sensor provides the ECU information regarding the vehicle’s speed that ultimately affects the shifting of the gears. If the information becomes erratic, then the transmission may only work in reverse.
Transmission Fluid
Another possible reason the car may only go in reverse is low fluid levels. It’s recommended to check this level when the engine is hot and when the car can run in neutral. Utilize the transmission dipstick in order to see if the fluid is actually running low. The transmission will not operate properly when it does not receive enough fluid supply.
Fluid Tube Crack
A broken or cracked fluid tube could also lead to this potential issue. Whenever the forward tube at the pipe joint breaks or cracks, the vehicle cannot move forward. The good news is this is a simple repair, requiring only to replace the damaged parts.
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