Why won't my car go into reverse?

If your car won’t reverse, it can be frustrating and dangerous. Use our guide below to troubleshoot common issues that prevent your car from engaging in reverse gear, so you can get back on the road safely and confidently.

Common reasons a car won’t go into reverse

Sometimes, the reason your car won’t go into reverse is straightforward. Here are some common causes to be aware of:

Low or contaminated transmission fluid

Transmission fluid is crucial for smooth gear shifting. Low or contaminated fluid can prevent your car from going into reverse. We recommend asking a mechanic to check that the quality and level of transmission fluid is correct. Dirty or low fluid can lead to significant issues in both manual and automatic transmissions.

Issues with the reverse gear

Problems with the reverse gear itself, such as damaged teeth, can stop your car from reversing. This mechanical failure often requires professional repair. Listen for grinding noises when you try to shift into reverse, as this can indicate gear damage.

Faulty shifter linkage or shift cables

In manual transmission vehicles, the shifter linkage or cables can become worn or misaligned, making it difficult to engage reverse gear. We recommend having a mechanic inspect these components for any signs of wear or damage. In some cases, simple adjustments can resolve the issue.

Sensor or valve body issues (automatic transmissions)

Automatic transmissions rely on sensors and the valve body to shift gears properly. If these components malfunction, your car might not go into reverse. Issues with the transmission’s computer system or hydraulic fluid can also cause problems. Diagnosing and repairing these issues often requires specialised equipment and knowledge.

How to troubleshoot a car that won’t go into reverse

Troubleshooting a car that won’t reverse involves a few practical steps – some of which should only be carried out by a professional mechanic:

1. Checking fluid levels: A mechanic will use the transmission dipstick to check the fluid and top it up or replace it if necessary (most newer vehicles are unlikely to offer drivers access to transmission levels, though it may be possible to check it yourself if you have an older vehicle).
2. Examining the shifter: They’ll look for any visible damage or misalignment in the shifter linkage or cables.
3. Listening for unusual sounds: Grinding or clunking noises can indicate mechanical issues within the transmission – this is something a mechanic will check for.
4. Differentiate between transmission types: For automatic transmissions, a mechanic will inspect for sensor or valve body issues. For manual transmissions, they’ll look into the shifter linkage or assembly, as well as correct clutch operation.

Can I drive my car if it won’t go in reverse?

Driving a car that won’t go into reverse can be risky. While you might still move forward, not having reverse gear can lead to dangerous situations, such as getting stuck in a parking space or unable to manoeuvre out of tight spots. It’s best to avoid driving and seek assistance immediately. Ensuring your car is in full working order is crucial for safety.

What to do if your car still won’t reverse

If your car still won’t reverse after topping up transmission fluid,, it’s time to seek professional help. The AA offers diagnostic services for transmission issues, ensuring you get expert advice and repairs. Consulting a mechanic can prevent further damage and costly repairs down the line. Additionally, consider The AA Breakdown Cover for peace of mind, knowing help is just a call away when you need it most.