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The automatic transmission fluid fill location on a 2008 BMW 650i can vary depending on the specific model and transmission type, but generally it is located under the hood and accessed through a dipstick tube.
To locate the dipstick tube for the automatic transmission fluid, follow these steps:
1. Open the hood of the vehicle and locate the transmission fluid dipstick. The dipstick handle is usually yellow, red, or black and is labeled with "ATF" or "trans." 2. Remove the dipstick from the tube and wipe it clean with a lint-free cloth or paper towel. 3. Reinsert the dipstick all the way back into the tube and then remove it again. The fluid level on the dipstick should indicate the current level of transmission fluid. 4. If the fluid level is low, you will need to add automatic transmission fluid. To add fluid, remove the dipstick and use a funnel to pour the fluid into the dipstick tube. Be sure to use the correct type of transmission fluid specified in your owner's manual. 5. Check the fluid level again with the dipstick to make sure it is at the correct level. Add more fluid as needed.
Note: It is important to follow the recommended procedure for checking and adding transmission fluid to your BMW 650i to avoid overfilling the system, which can cause damage to the transmission. If you are unsure about the location of the dipstick or how to properly add fluid, consult your owner's manual or a qualified mechanic for assistance.
Our research indicates that your vehicle does not have a transmission fluid dipstick. These types of transmissions are designed to be maintenance free. In order to check the transmission fluid, your vehicle likely has check valve on the bottom of the transmission on the bottom of your car. Your car must be level when the fluid is checked and we therefore recommend having a mechanic with a hydraulic lift or underground bay check your transmission fluid. Any fluid leaks for this type of transmission should be treated by a mechanic.
Transmission Fluid is the lifeblood of your auto and considered to be the one of the most critical components for a good working transmission, as the chemical makeup & viscosity of the fluid helps determine correct pressure and shifting. For this reason, use only BMW specified fluid - DO NOT use any non-approved fluid.
Measuring correct transmission fluid level is done after the engine/trans has WARMED UP.
If you measured your transmission fluid level using a dipstick, then you generally add BMW spec fluid through the same tube as the dipstick. CAUTION: never overfill the transmission, as excess fluid will cause 'foaming' and this usually creates further shifting issues.
If you have determined the fluid is low, the trans components will still function, but any attempt to operate the transmission in DRIVE with inadequate fluid, will likely cause unneccessary damage.
If there is no dipstick present, then this model BMW (much like the Merc's) denies you the ability to change your trans fluid yourself. This is a precautionary measure by the manufacturer to prevent the owner from changing the fluid. Instead, the workshop will have a special tool to measure the fluid level.
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on the drivers side of the transmission under the car is a plug similar to a rear end in the older rear wheel drive cars bmw has
a lifetime tranny fluid setup so take out the plug and fluid should drip out its right behind the shifter cable if it dosent drip out youll need a pump to put it in you can get these at advance auto
On the driver side of the transmission pan there is a fill plug. The car must be in the air and level. With the car running fluid will run out of the plug hole when it is full. This is no fun without a lift.
Your car, being a 735 iL (the iL being the key here) requires what is called Pentosin 7.1. This is a mineral based hydraulic fluid used in BMW's with self leveling suspension. Since your car is an iL you have self leveling suspension. Not a lot of parts stores carry this fluid. NAPA has it, if it's not on the shelf they can order it. BMW dealers also stock it. The same pump that runs your self leveling also runs your power stearing and they are filled in the same location as they share a common resivoir. This resivoir is located in the engine compartment on the driver's side and looks like a black bottle with a screw type cap.
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