Matthew Ashton

It’s a different system on the F07 and doesn’t use the electric motors attached to the brake callipers as per the F10/11 and newer BMWs. There is a central motor with cables to the callipers. A common and expensive failure on the F07.

Utter nonsense from your mechanic. BMW’s are over priced and the cheaper ones do the same job and others have had reasonable experiences of those. If they are leaking are you sure they were fitted correctly? A good in between will be those from Arnotts or Aerosus.

If using generic speakers, they will have 2 spade type connectors. You need to make a short lead using the parts mentioned earlier on one side (BMW wiring compatible) with 2 spade connectors on the other (Generic speaker compatible). A simple tail. Generic speakers usually come with wiring so you could just modify those.

Those are the electrical pins and plugs to connect the new tweeters to the existing door speaker. If you have the base sound system you won't have tweeters in the doors (or anywhere else) and this is just how they are connected. You could do without and just splice the existing speaker wires. Just a quick revision to my original statement, the OP used non-custom for speakers so he made up a wiring tail from the new speakers to the factory speaker wiring and that is the second of the 2 part numbers me thinks. If you chose to go with one of the more expensive custom fit speakers they will plug straight in.

@HandyAndy_UK also has an ex police car. Andy, where your car’s rear fuse box?

There’s one behind the front glove box that I’m sure you’ve seen but the one in the rear should be there? The aux battery would be low down leaving space for the fuse box towards the top of the space? Can’t imagine they changed the wiring to that extent as it would need to be a majority custom harness.

You must have been pushing the car and that is showing how many miles you got per gallon of beer

It was plug and play using the existing speaker to head unit wiring.

I have to philosophical about the issues. The window was a little concerning but now resolved and the other niggles the car is perfect. Before now I’ve only had excellent service from Coopers Tunbridge Wells but they are inconveniently located considering my new job. Onwards and upwards!

Hi Steve, to the contrary, now everything works as originally intended, I’m loving it even more! Thanks. I went to Goodwood last Sunday, leaving early in the morning and the roads through the South Downs were empty and winding and the car was a joy to drive along them, handing beautifully.

I booked my 6GT 640i xDrive into Stephen James in Bromley (first time I’ve used them) to address a number of issues: 1) When accelerating during an overtake and the gearbox has dropped down a couple of gears it was taking too long for the car to change up and drop the revs once I’d let off the throttle. 2) Active rear spoiler (not really of interest for G30/31 owners), in December on couple of occasions it deployed at 68mph as normal but threw an error saying it hadn’t fully deployed. 3) Driver’s door window stopped working. Would only drop 1cm and no more 4) Windscreen wipers when on auto were annoying. If auto and intermittent, they would go up and then down but all the way down into the park position and then back up 2cm into all I can describe as a “wait” position for the next call to swipe. Trust me, once it’s done that 5 times your ready to rip them off the screen. 5) Pano sunroof creaking 6) Aircon control panel has a vertical line of failed pixels. After 2,5 days I call them to see what the progress is. Yes, the car is fixed and you can collect later - me: thanks for the courtesy phone call! I go to pick the car up and the technician comes out to the car with me to discus the work. There is an i3 parked across the front of my car on, charge. The charge cable strung down the side and over the front wing of my car! Not happy! The car’s software has been updated to address the wiper odd behaviour and the over revving - problems seem to be resolved. The active spoiler drive mechanism has been replaced. The Driver’s door window winder motor has been replaced and the issue is fixed but now the whole door vibrates when the window goes down and up! They couldn’t see the failed pixels on the aircon control so left it. And I was told the sunroof creaking was fixed. We agreed that the window winder motor and mechanism would need to be replaced and if I could provide a picture of the failed pixels they’ll replace the control unit. As soon as I drove out the sunroof started creaking! So this week it’s been in again. And, all is fixed! While the technician was an upmarket and very pleasant person they just don’t have the same forensic attitude to repairs as we do. I have spent at least an hour aligning the active spoiler to give it even body gaps all round and to make sure its at the right height compared with the body panel around it. Oh and I had to machine polish the spoiler to remove the newly introduced scratches. It is a real shame when you drive a £70k car that the service isn’t top notch in return. I got there in the end with my issues addressed and the dealership is very convenient to my work. 15 minutes on the bus each way. Just thought I’d share my experience, maybe your 540i’s are exhibiting some if the same issues. Here’s a picture of the failed pixels, I’d read on other forums that this was quite common so I suggest you keep an eye on yours while still under warranty. See the line to the left of the menu button?

Take it straight back. There’s no such thing as software reset and things taking time to settle down. Did they change the EGR or was the thumbs up to say they investigated and yours was fine? If it is the radiator fan that is in continuously I’d suggest they have fiddled and disconnected something like one of the temp sensors. I’d also take a look at the front of the engine and see if there are any loose wires or pipes.

You need to start by getting the fault codes read to see if there are any that give a clue as to the source of the issue. This is a strange issue but there are so many variables at play pin pointing is going to be quite difficult.

All signals to do with doors are electronically monitored via the CAS module. There is no mechanical switch as you would have found on cars 20 odd years ago.

Hi, It is always a balance and with the car being 5 years old and only used for short trips, and these being rear pads, I’ve decided to go with a quality 3rd party brake pad and picked up a genuine sensor from another dealer on eBay. The discount you offered on the genuine parts is better than any other dealer for genuine parts and I do appreciate the convenience of dealing with you over the forum in general.