20 Most Recent 2009 BMW 525 Automatic Questions & Answers

Hi this could point to either low oil in your gear box, or a faulty speed sensor, if you have a oil leak on the transmission this would come up, but also if the speed sensor also on the transmission is faulty you would get this code.. hope this helps

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Sounds like your key switch is malfunctioning.

Run the fault codes and check for TCM failure. Check transmission fluid levels

The petrol flap doesn't have a lever to open it like other cars but can be opened when the car is unlocked by pushing on one side of the flap to open, if this will not open then the fuel flap locking actuator is faulty and has not unlocked the fuel flap, if this has occurred open the boot and on the left hand side of the boot you will see a round button, if you cannot see this and you only see a hole then chances are the side cover has been off at some stage and the button hasn't been reinstated, if it is there, pull on it and it will pull the fuel flap locking actuator back allowing you to open the fuel flap.

Typically, you will find the fuel pump for a BMW 525 located under an access panel in the trunk. Remove the contents of the trunk, remove the floor/spare tire cover and a metal access panel will be visible on the floor being held in by several small bolts. The panel is about 4"x6" in size. Remove the bolts, carefully pry up the panel (it has some sticky sealing material) and the fuel pump mounted on top of the gas tank will be visible with fuel lines entering/exiting it. This is where it was for my 1990 525i.

Hii do not know if you have allready done this, but check the carpet under the dash press hard on it and see if it is wet, sometimes the small radiator in the heater ( called the matrix ) leaks due to corrosion, and you cannot see a leak from the outside as it is leaking inside the vehicle, also sometimes you will smell a sweet smell inside the vehicle if there is allot of antifreeze inside but not all the time.Hope this helps.

I recommend that you sign up for a subscription to ALLDATA online, you can find links to do this through autozone. ALL DATA has all the repair, body, management online accounts you need for timing reference marks, firing orders, suspension repairs, air conditioning etc.Use your laptop with a wireless internet connection, then the computer is all you need beside actual tools of course.

Test the battery with a voltmeter. Should read about 12.2 to 12.6 volts for good starting. If less then 12.2, have the battery charged and see if it comes up to 12.6. If it comes up to 12.6 and won't start, battery capacity my be diminished and may need to be replaced. Also, check tightness of cables at battery connectors. Loose is not good for starting an engine but still may operate the interior lighting.. Also if it's a stock BMW battery, I get about 5 yrs of service from them.

Have a coolant system pressure test done to find the leak if external. Have a compression test done to check for head gasket or cracked head