The only problem I have is the CD player won’t accept CD’s. There is no disc in the CD Player so not sure what the problem is. Also the CD changer won’t play any of my discs, it says reading CD’s then nothing happens. No answer for the single cd player, but the cassette is a common problem. Sometimes a sharp 'rap' on the side of the cd BMW's Z4 has been delighting motorists since 2002 as a much-improved-handling follow-on to the Z3. The E85 comes in a roadster (convertible) and coupe (hardtop) version with M variants. Sales have followed the boom-and-bust cycle common with two-seater convertibles with a run-up shortly after the model's introduction, tapering off in the later Any problems are really fair game on 10+ year old N54’s with 100,000+ miles. We wrote an in-depth post about The 8 Most Common N54 Engine Problems. The list below includes more common problems with a bit less analysis on each. What Are the Most Common BMW N54 Engine Problems? N54 Oil Leaks: Valve cover and/or gasket (VC/VCG) Z4 - 2003 - Intermittent wipers are, ah, intermittent. So, I *thought* I noticed this last week, then this weekend the wipers worked just fine, rain sensing and all. Today, en route to work, all was fine. On the way home, we started off fine, but after a quick stop (car was turned off for about 20 minutes), they would not work again. 2 posts · Joined 2017. #9 · Nov 8, 2017. Forgive me for being late to the conversation. I too am looking at a used '09-'12 Z4. I spoke to a local BMW mechanic who spoke of various woes involving oil leaks (oil pan, valve cover, oil filter gasket). He especially meant this for the 35 twin turbo engine. Then remove the screw at the back, it will be obvious which one it is. 3- Then remove the 4 little screws at the front of the panel. 4- Then remove the side screws (one on each side) it won't come off without breaking unless you Remove them as I very nearly found out. It's of special interest to note that on July 5th 2006 BMW implemented two production changes 1. a new machining process that produces a smoother surface of the worm gear & 2. a new lubrication for the worm gear. BMW also made a change in mid June 2005, but that did not "fix" the entire problem. What is highly irratating is that BMW has known I'm sure it will be found useful. Applies to all E85 and E86 audio systems, all levels, basic, Hi-Fi, Carver. Includes wire size, colour, max. current info. Code: Select all. BMW E85/E86 Business Radio Pin Outs Pin assignments at black plug connector X18805 pins 1-8 (A) Pin assignments at black plug connector X18126 pins 9-16 (A) Pin Type .

bmw z4 e85 common problems