2009 BMW 735i - Answered Questions & Fixed issues

Wiring, schematic, electrical diagrams, fuse diag, error codes, torque settings etc are basic contents of these online books they have here on this website www.reliable-store.com I have attached. Must check it out

Grounding faults (poor or missing ground from engine to frame/ battery to frame) would be the first thing I would check. Use an Ohm meter to check to see if you have solid grounds to all the critical points. A bad ground will make your electronics go nuts.

yes many dash kits are availble for this model

this sounds like a coolant flow problem. possible rad plugged or water pump problem.

are you sure it has one? i dont see it any where.

Remove your trunk mat and spare tyre. You can access fuel pump through plate in the trunk. Don't need to drop tank. Check fuses and relays first.

1991 735i cable colours to rear lights

The FIRST step is to scan your onboard computer network for fault codes.

If it has not been tuned up within the past 6 months start there.Make sure the ends are seated correctly as well. If you start it at night with the hood up, look for arc over from the ignition components, and plug wires. Replace any plug wires that show arcing. You do not mention year, but if you have coil blocks instead of distributor look closely at the blocks in the dark with engine running for corona or arcing- replace any that show any signs of it. If you have the distributor still, check for corrsoion and carbon tracking the cap.If the condition persists, look at the fuel system. Fuel filter should be replaced with the tune up, or if tuned up recent, replace filter. Check fuel pressure to make sure it is adequate. Mke sure fuel tank is vented as well.

Question edited for clarity and spelling. https://www.google.com/search?q=bmw+e36+convertible+roof+not+working ..

If you have a multimeter remove and test the fuses for continuity (OHMS) as fuses can look OK but they have blown. If your replacing fuses ONLY replace the with one of the Same colour and Amp rating.

Yes, Bimmerfest Forums are a great resource. https://www.google.com/search?q=BMW+325ci+vacuum+hose+diagram ..

Question edited for clarity. changed your Poly Vinyl Chloride (PVC) into Positive Crankcase Ventilation (PCV), and added some punctuation to make real sentences. Your car is run by computers, the computers have diagnostics and will tell you what's wrong. You can't guess faults like you have. A Professional Grade Scan Tool computer can diagnose all the computers, modules, sensors and systems in about 40 minutes. It can even record what happens and what goes wrong as you are driving! https://www.google.com/search?q=mobile+auto+electrician+near+me ..

http://www.bing.com/videos/search?q=power+window+switch+wireing+for+a+BMW+x3+2004&FORM=HDRSC3

https://cararac.com/blog/bmw-no-crank-no-start-problems-and-solutions.html This will give you a few ideas of what to look for. Make sure you are getting battery voltage to the fuse box.

To turn off HDC on a BMW, all you have to do is press the HDC button located on the center console. The button will have an image of a vehicle going downhill with a speedometer above it, and you'll know it's off if there are no lights illuminated above it. If you ever want to turn the system on again, just press the button again.

Since you fixed the fault by scan advice and was ok and on testdrive another limp mode came up, just check again with your scan to see what is the possible cause for it. Probably the crank sensor.

6 years different and a different series? If only life was that easy! Some BMW have a mechanical pump driven by the serpentine belt, and some have an totally electric powered pump. Just buy one for the model you have. https://www.google.com/search?q=2012+BMW+535i+water+pump or https://www.google.com/search?q=2006+BMW+330i+water+pump Rock Auto are a good suppliers, have images and different makers and 'qualities'. https://www.rockauto.com/en/catalog/bmw,2006,330i,3.0l+l6,1431850,cooling+system,water+pump,2208 ..

Check the basics first. Is battery fully charged? This is the most common reason for a no crank, no start. What exactly does it do when you turn the key? Nothing at all, no lights, no 'click' as you turn the key. A slow lazy crank?

https://fuse-box.info/bmw/bmw-3-series-e90-e91-e92-e93-2005-2013-fuses-and-relay