Engine Hesitation under Acceleration. When you start noticing your car does not want to accelerate as it formerly does, it's a symptom of a faulty Vanos solenoid. For example, you may get the feeling of stalling or that your engine wants to sputter. Another indicator is your car falling into limp mode under acceleration, the engine bogging Vehicle: BMW E92 2007 325i Coupe Petrol / Manual. Symptoms: When the start button is pushed, the car cranks but the engine does not start. It will crank for up to 30 seconds without success. The rate of cranking appears / sounds normal (definitely not excessively quick or fast). All the dashboard indications look normal. If only fault codes 29F1/29F2 are stored in DME, refer to SI B12 16 06 (November 2006). SITUATION II. Customer may complain of: Excessive cranking time before engine starts (5-6 seconds) on cold start, or after hot soak, In most cases GT1/DIS diagnosis shows fault code 29DC, and/or 2FBF. In this video, you will learn 5 symptoms of a bad voltage regulator. Watching this video will help you diagnose whether it is time to replace your voltage re The car’s engine electronics (DME/DDE) step in, swiftly turning off all the non-essential consumers (fancy talk for parts of the car that use electricity but aren’t crucial for starting the engine) to save what’s left of the battery’s power. And then, as a courteous heads-up, your BMW flashes the “Increased battery discharge Symptoms: car won't start during a track event, at first I thought battery is discharged because I left the car on without the engine running, so I asked my friend to push it for me. However after I hook up my diagnostic scanner, the battery shows 12.2V with engine running, drive home for about an hour and voltage dropped to 10.8V (alternator BMW wants $640 for a new negative battery cable with IBS. Some after markets available around $100 on EBAY.My BMW has Navigation and the cell phone prep which requires a specific cable. I found a used one for $50+shipping. Newer BMW vehicles, starting from E90 335i, have engines with high-pressure fuel injection. This is a delicate system that can be damaged by low-quality fuel. High-pressure fuel pumps and injectors are the usual failure points. Symptoms include engine hard starting with long cranking, rough idle, and a yellow 1/2 ‘check engine light. 1) The Engine is Slow to Start. One of the most common signs of a dying battery is a slow crank to your engine. If your BMW’s lights start to flicker or your ears pick up an unusual noise, this might be a sign that your battery doesn’t have enough strength left to start the vehicle. Don’t ignore this warning sign! A series of rapid clicks from the starter. The starter relay clicks, but no crank shows the starter motor is not receiving enough electrical current from the relay to turn the engine. This is also a sign of a low or dead battery. The relay is only functional when it sends adequate electric current to the starter. Xh51.