Replace window regulator 330i - 2003 BMW 330

are they new?
give them 100 miles before they all bed in

You may be having problems with the crankcase pressure regulating valve (PCV). If this is clogged or malfunctioning, pressure can build up inside the engine and blow oil out the filler tube.

Hi the usual leak is from the transmission sump / filter there is also an area where the cables for the electronics go into the transmission this seal may also need replacing.

DRAIN IT, REMOVE THE OIL CANNISTER THAT HOUSES THE FILTER, REPLACE, AND RE-FILL WITH OIL. OH YEAH, PUT THE OIL PAN PLUG BACK IN BEFORE FILLING.

check and adjust the limiting switches for the window control

lean readings on banks come from air leaks in manifold and exhaust--- low fuel pressure --regulator --pump.--filter- bad injectors ---MAF/VAF sensors faulty and HO2S faulty. Have a BMW dealer shop look at it

there is a voltage regulator in the back of the heater system if you change that it should work again. if i remember right you can get to it via the glove box when it is removed. has heat fins on it.

sounds like your window regulator is going bad

Regulator is broken. Very common problem on e46.
The plastic window regulators were apparently designed by the same guy who designed the plastic guides in the moon roof (which also spontaneously disintegrate on a regular basis).
The window regulator costs $150 from on-line vendors, and is not too hard to install.
I fixed the driver door window regulator in my wife's '04 330i with a couple of zip ties and it is still working fine a year later.

You will need a Torx head screwdriver.
First, disconnect the battery and leave it disconnected for several minutes because you don't want to lose a finger in the window mechanism or have the air bag blow up in your face.
Next, starting from the rear, carefully pry up the trim strip that runs from the door latch back to the back of the door. It is usually wood-grain finish, but may be aluminum or carbon fiber, depending on your interior package. Remove the screws beneath that trim.
Pop out the two oval plugs from the underside of the door handle, and remove the two screws beneath those plugs.
Now with something large and flat and preferably with no sharp edges, start snapping the inner door panel off. If you break some snaps, no worries. They are available on line for $0.35 each or at the dealer for about $1 each. The top of the door panel does not hook in the window sill like most cars, it snaps straight out.
Now disconnect the speaker wires, mirror control, and probably the air bag. You can leave the air bag connected if you are willing to work around it.
I presume that your window regulator is broken. Specifically, the piece of plastic that attaches the window mechanism to the cable. You can replace the whole regulator, but on my wife's '04 330i, I chose to put two good quality zip ties around it. One just above the broken piece and one just below it. There are holes and notches in the metal backing plate that work great to hold the zip ties in place. I did this repair a couple of years ago and the window still works just fine. Much quicker and cheaper than replacing the whole regulator.
If you unplug the air bag, DO NOT connect the battery and turn on the key to check your work while the air bag is unplugged. Doing so will set a critical fault in the SRS system that only a dealer or well-equipped BMW repair shop can clear. DAMHIK