Question about BMW 325
Indicates a broken wire that controls the valve servo .solenoid operation
the battery could be a faulty voltage regulator
Posted on Dec 18, 2017
There is obviously a draw from somewhere, and if your dealer doesn't have a mechanic who knows how to narrow it down to the circuit causing the problem, then I'd question there ability. With that said, when all else fails, you simply remove negative connection off battery first, then positive. Take a 12 volt test light & secure one end to the + clamp or connector, and the other end to the battery+ post. Now connect your negative back up to the battery as it was. If that test light, lights up, there is a draw. It will be brighter, the more draw there is. Your going to have some, just from your radio memory alone, but now comes the fun part. All you do is pull the fuses one at a time, if light goes out, or dim's you've found a draw. When you have a real hard one to narrow down, you make sure you know where they all go back to, whether by your map at fuse box, or your own notes, and you pull them all out, and light should go out for sure, if not, there is another circuit or panel, or relay drawing the current. If it goes out, you start putting them back in one at a time, and when the light comes back on bright, you found the circuit. Mark that one down, pull the fuse back out, light off, now do the rest that you haven't checked yet, just to see if there is more than one draw causing the problem, if there is, mark it down, pull it out & continue on until all done. Now you/they narrowed it down or isolated the circuit causing the problem.
Posted on Dec 30, 2008
If these are false readings (which I doubt) you can try resetting the system to restore all factory default settings. You need to have the system set in customisation mode to do this.
Check your vehicle handbook which explains the steps to do this.
Once reset drive the car and check the warnings.. If they remain (and they probably will) you will need to take the car to the dealer to diagnose and rectify the problem.
Your handbook explains what each of the warnings means and the air bag fault warning should not be ignored. "Service error" means there is a fault with the instrument panel and Fuel Gauge Error means there is a fault with the fuel level measurement system
Posted on Dec 03, 2009
Hi I have a 2003 318i se saloon it started to loose power a few weeks ago now when you rev it up it makes a noise through the inlet manifold like its a dump valve it still drives but with very reduced power i had a new exhaust fitted yesterday with a new cat as i was told the cat had collapsed been told it could be the timing chain other than that i have not got any idea can any one help please.
Posted on Sep 23, 2011
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