1. Low or Dirty Transmission Fluid
Low or dirty transmission fluid is likely to affect both manual and automatic transmissions. Low transmission fluid results from leakage of the oil. Whenever there is low transmission fluid in your car, it will result in gear slippage, a problem in shifting and gears overheating. In case you see red or black fluid under your vehicle, ensure that you check your vehicle immediately. To avoid the dirt in the transmission fluid of your car, ensure that you change the filter and fluid frequently as described in the manufacturer specification.
2. Problems in the Transmission Position Sensor
This problem affects automatic transmission vehicles. Whenever you change gear into reverse, there is an electronic sensor that prompts the powertrain control module to change into reverse. In case there is a malfunction in the sensors, or they fail to sense, it will be challenging to shift your car into reverse. The problem can also make the car go into limp mode. When a vehicle is in limp mode, you cannot shift the gear beyond the third gear. Check at the engine light and check if there is trouble code using the car diagnostic tools.
3. Broken Teeth on The Reverse Gear
This is a common problem in manual transmission vehicles. However, it also affects automatic vehicles. The problem is as a result of improper gear shifting that is usually accompanied by clicking noise. When a vehicle has broken teeth on the reverse gear, you will hear unusual sounds when you shift the gear to reverse. This problem is fixed by replacing the gear.
4. A Problem in the Shifter Mechanism
This problem affects mainly manual vehicles. It makes it hard to shift the gear, a problem that results from a malfunction in the shifter. It makes it hard to change the gear, and it feels like something is blocking the gear from shifting to the reverse position. The problem is associated with the cables or linkage in the shifter. You will need a mechanic to determine the actual cause and have it rectified.
5. Slippage in the Transmission
This problem occurs when you are driving in a particular gear and suddenly, the gear shifts automatically to another. While the gear is shifting itself, you will hear an unusual sound coming from underneath your vehicle. The car then becomes less powered, and it could even stop. It signifies a problem in the transmission line, which is likely to be caused by tear and wear. It can lead to failure in your car's reverse gear. Check your vehicle immediately, book it into your trusted mechanical workshop immediately.
6. A Problem in the Lockout Ring
There is a lockout ring that prevents you from shifting the gear into reverse while the vehicle is going forward. It can cause a severe problem in the transmission when it shifts to reverse while you are driving forward. In case the lockout ring is faulty, or it is misaligned, it can prevent you from shifting the gear into reverse even when the vehicle is at a standstill. Therefore, it means that your car will not go in reverse.
7. Gear Shift Lock
This is a problem that affects automatic transmission cars. With this issue, you can only drive your vehicle in the first gear, and you cannot shift it to the reverse. Among the gear problems in automatic transmissions, gear shift lock is the most dangerous. The problem is often caused by the transmission shift solenoid that is responsible for pushing the transmission fluid to different parts of the system. When it is faulty, it cannot transmit enough power necessary when driving forward or reverse. The problem is solved using the shift lock release mechanism.
8. Broken Flywheel
Difficulties when changing to reverse gear can be caused by a faulty clutch or the flywheel. The work of the clutch is to disconnect the gearbox from the engine. By depressing the clutch pedal, the clutch disc moves away from the flywheel. The flywheel spins with the engine's crankshaft. When the clutch cannot touch the flywheel, the gears slow down, allowing shifting to reverse gear. Failure by the clutch disc to move away from the spinning flywheel makes it impossible to shift into the reverse gear. Hence, the car cannot go to reverse. A problem in the hydraulic system in the clutch or fluid leakage can cause the problem. Ensure to add the necessary fluids to avoid issues with the clutch.
Now that you have known possible reasons that can make your car not to go to revere, it is important to check your car regularly. You can also take it to a specialized mechanic frequently to have it checked. This will ensure that your vehicle gives you a more extended service and also avoid inconveniencies by detecting mechanical issues early enough.