BMW 7 Series E65 and E66 (2001–2008) — common faults, maintenance guides and repair tips.
A single module is waking the car up or keeping it from going to sleep. You can find the fault by pulling fuses one at a time and watching when the re...
The cause is often the steering angle sensor module under the steering wheel. When it does not supply steering angle data, indicator self-cancelling, ...
The cause can be the solenoid valves in the Dynamic Drive valve block. The block is not available separately and is replaced as a whole. The fault is ...
Glowing starts when the coolant temperature is below 25 °C. At that point it lasts 0.5 seconds. The time grows as the temperature drops and is longest...
On the N62 engine, a typical cause is the coolant pipe (telescopic pipe) running through the middle of the engine leaking. The coolant often drains ou...
The webasto is bus-controlled, so it cannot be started by feeding power directly. The cause can be a locked-up control board, a weak or old battery, a...
On the N62 engine, a typical cause is worn Valvetronic intermediate levers and eccentric shaft. Cylinder filling then becomes uneven, and the symptom ...
The most common leak points are the valve cover gaskets, which harden and leak over time, and the vacuum pump seal at the front of the engine. On the ...
Rail pressure is the pressure in the high-pressure fuel rail. If it stays low, the cause can be that the fuel pump in the tank is not getting a run co...
First check the connector between the door and the body: if it has partly come loose, disconnect it, clean it and reconnect it. Then initialise the wi...
Usually the hydraulic lifter cylinder is leaking oil and there is too little oil. The motor hums, but the tailgate moves slowly or jerkily, especially...
Often it is. If the temperature stays permanently at about 75 degrees or varies a lot, that is not normal. The yellow engine warning light may come on...
First check the turbo control rod and the actuator that moves the turbo vanes, as well as the vanes' freedom of movement: carbon-fouled vanes stick. A...
Changing the oil pan and filter and using new gearbox oil is a sensible first step. It has almost completely cured the hunting and rough shifting. Old...
The cause can be an internal fault in the Valvetronic control box, shown as fault code 285E. Code 2865 is merely a consequence of the power limitation...
One cause is a blocked sunroof drain hose. The hoses run behind the front wheel arches, and cleaning them can fix the leak. The sealing compound in th...
Besides the bulb, the fault can be in the ballast, the bulb's ignition control unit. If a new bulb doesn't help, move the ballast to the other side: i...