2007 BMW 525 Xi - Answered Questions & Fixed issues

They only attach at the top & bottom What is loose? No reason to be loose Are you sure you asking the correct question

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Sounds like your key switch is malfunctioning.

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.

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

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

cracked distributor cap and/or bad plug wires

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

My guess is that your electric fan is NOT operating at all. Under normal conditions, just going down the highway, your cooling system will function just fine without a fan running. The air flow through the radiator is adequate to keep things cool. However, when you stop, you quickly get into an "overheat" situation. Actually, you should be able to hear your fan begin operating when your engine temperature starts climbing or your air conditioner requires the fan to do its thing. Note: If you've ever severely overheated your engine, your problems may be worse than just a fan not running, but you really do need to confirm whether your fan is operating correctly, or not. Another note: I had a vehicle with a tendency to overheat when stopped. It turned out to be a faulty (leaking) pressure cap on the cooling system.

sounds like cable is broken in side temporary run a cable from fuse to reverse-switch.. then check out if ok run new cable from fuse to switch

take the wire to the fuel sender unit at the tank and earth it out. If the gauge reads full then it is the sender unit.

The radiator fan only comes on when the engine is at operating temperature. If it's not coming on when the engine is up to temp, check the thermostat.

Not to knowledgeable on transmissions but i do know that a vacuum leak can give you transmission problems.

it slips?

The pressure can be good and the flow can be bad. Change the filters on the fuel line first. Then if it persists you have to check the flow. If it still is ok, you are looking at either a problem with the throttle control module or crank sensor.

my car is the same way, so I only use the trunk lock ........to lock/unlock vehicle.....no more problems.........

If everything you checked is working properly then it must be the fan motor. I'm sure you know it only turns on when a certain temperature threshold is reached correct? Checking because I've had people come in who think it should always be on.