How to Check Transmission Oil on a BMW

Need to check the transmission oil in your BMW?

Depending on which BMW you have, there are different procedures you need to follow.

In this blog, we will cover how to check the transmission oil of models both with and without a dipstick for the transmission.

How to Check BMW Transmission Fluid Levels

Here are the procedures you need to follow for checking the transmission fluid level on your BMW.

Regardless of which transmission you have, you will want to warm up the fluid, ideally by driving the car for a short trip.

For Transmissions With a Dipstick (Older Models)

1. Find the transmission fluid dipstick, which is usually located near the oil dipstick under the bonnet.
2. Remove it and check the fluid—it should be clear with a light pink hue. If it appears dark or has a burnt smell, it may be time to change it.
3. Clean the dipstick, reinsert it completely, then remove it again to check the level. If it’s below the Full mark, use a funnel to add the correct type of transmission fluid.
4. Regularly checking this each month can prevent future problems.

Sealed Transmission Procedure

Sealed transmissions in BMWs need a particular method for checking as they don’t have a dipstick.

You must go to a professional who can access the fluid through service ports. Only qualified technicians should manage this task to prevent damage to your system.

Although these transmissions are sealed, they still need regular maintenance. If you hear unusual sounds, experience hesitation in changing gears, or face delays when accelerating, these might indicate that the fluid levels or quality are affected.

It’s advisable to have these checks carried out during regular service visits. This ensures your transmission works well and prolongs its life, keeping your BMW in excellent condition without unnecessary complications.

Manual Transmission

Manual transmissions typically do not have any way to check the fluid. The only way to check the fluid is to drain and refill the gearbox.

How Often Should You Check Your Transmission Fluid

Under normal conditions you shouldn’t need to regularly check your transmission fluid.

The only reason to do so would be if you notice leaking and need to make sure you have enough fluid in the transmission.

BMW transmissions have “lifetime” fluid, though this should be changed around the 100,000kms mark.

Need Your BMW’s Transmission Fluid Changed?

As BMW service specialists in Auckland, we can carry out all transmission servicing on your BMW.

To get your fluid changed, speak to us today by calling 09 441 3635 or emailing service@dodsonmotorsport.com.