Changing to a $700 oem battery and registering to computer, and even changing starter motor didn't correct this occasional no-start. It is very embarassing when vallet person runs back saying your car isn't starting. 2. Driving normally without any signs of engine or transmission malfunction, the car looses power and warning lights comes on. Figure 1 The alternator on BMW E60 models with a M54 6-cylinder engine is located on the left side of the engine (green arrow). Figure 2 Locate the accessory drive belt tensioner and remove the dust cap (green arrow) using a flathead screwdriver. Figure 3 Using a ratchet with a long handle and an 8mm Allen bit (green arrow), rotate the drive I tried another shop that was highly recommended by friends Accuracy Automotive in Gig Harbor - a high end detail shop with great diagnostic tools. The owner races in the Northwest BMW 325 race league. Make: BMW Model: M5 Year: 200704 VIN: CX08493 Test Time: 2016-01-19 20:04:58 Low battery symptoms? It seems like a lot of people have had some strange symptoms when their battery is on its last legs. I'd like to hear some from others. 1. Slow start (most obvious) 2. Trans program 3. Gauges go haywire, especially the tach 4. "Floating" gas gauge 5. Dim lights 6. Poor engine responce Any others? 01-03-2013, 04:54 PM #2 First, do a diagnostic process to allocate the issue, then clear the codes. Low battery voltage may also prevent the transmissions from shifting into Reverse or Drive. 6. First Gear Glitches. Often, gearbox glitches may be traced to the first gear, particularly in BMW 750li transmission malfunction. 2004–2006 BMW E53 X5 V8 2003–2010 BMW E60 5 Series 2005–2011 BMW E90 3 Series 2003–2010 BMW E63/E64 6 Series 2007–2013 BMW E70 X5 Except 4.0d 2008–2012 BMW F01/02 7 Series (except 760i/Li and Hybrid 7) Change Automatic Transmission Fluid BMW may say their transmissions are sealed for life and require transmission fluid change. This malfunction can occur in BMW models such as F10, E70, E60, F30, F15, X3, and more. The cause of the malfunction can range from software issues to mechanical problems, and it can result in reduced visibility while driving at night. Hi guys I have a similar problem with transmission fault on my 525d 2006 I changed the battery,alternator ,relay, body control module checked all the fuses but still nothing changed and maybe 10 more messages like cruise control failure, DBC failure, drive control system, start assistant inactive, fuel pump, servotronic failure, but car drives and sometimes all the messages gone and after 1 or cmqlASA.