leak tagged posts

BMW X3 Automatic Transmission Service with Fluid and Filter Change for E83

automatic transmission

Here’s a walk thru of a BMW X3 automatic transmission service with fluid and filter change on a 2008 E83. The 2008 has a 6 speed GM 6L50 transmission that uses Dexron VI automatic transmission fluid. You’ll need 6-7 quarts of replacement fluid, the replacement filter, replacement pan gasket and a few other items I’ve listed below. I found it easiest to simply buy a 2008 BMW X3 transmission service kit which includes the replacement fluid, replacement filter, replacement pan gasket, hardware, O ring, and drain plug. I was paranoid about a fluid leak so I wanted to do everything right for this service. Some of the special tools I needed for this procedure were a torque wrench, and some sort of pump to get the fluid into the transmission...

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BMW X3 Coolant Expansion Tank Leak and Replacement Fix E83

coolant expansion tank

If your BMW X3 low coolant light comes on, it’s normal to have to top off the tank once or twice a year. But if you top off your tank and the low coolant light comes on again within a few days or a week, then you probably have coolant leaking from the system somewhere. First, check the back of the oil fill cap and make sure you see only brown oil as expected. If it’s foamy or creamy texture, you might have a head gasket leak. Most likely you don’t have a head gasket leak and it’s a coolant hose or coolant expansion tank leak. In the video below I explain how to diagnose a BMW X3 coolant expansion tank leak and how to replace the tank.

As you can see in my video, I had a small leak that didn’t even puddle water in the garage, at first...

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BMW X3 wiper fluid leak motor and tank repair (E83)

A plastic Wiper fluid tank

Recently I noticed a wiper fluid leak on the floor of my garage near the BMW X3.  Around that same time my windshield wiper fluid light came on as well.  It turned out I had a bad wiper fluid pump motor which was causing a leak. It was easy to repair and I took some photos and documented the repair procedure below. Update: And now there’s also a YouTube video.

The wiper fluid tank is easy to remove, a single screw at the top secures the tank (if standing in front of the vehicle)
2008 BMW X3 wiper fluid leak with the tank installed

Remove the screw and set it aside. Tilt the tank upward and you’ll notice plastic tabs on the tank secure it to the car, gently pull the tank free so you can tilt it out further. At this point, you might want to empty the wiper fluid from the tank, I used a cooler because it was close by and I could reuse the fluid and hose out the cooler afterwards. You don’t have to completely empty the tank, I emptied enough fluid to handle the tank more easily. Sit the tank back into the compartment but oriented so you can work on the motors which you should be able to see now. Be mindful not to disturb the wires or hoses just yet. You should see at least two motors attached to the tank, perhaps three. My car does not have the cold weather package which uses a pump and would go above the two other pumps. You can see the place it attaches in the photo above.

Evaluating the wiper fluid leak, tank, and motor:

At this point I could see fluid had been le...

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