Q: A.c. not turning on at all

There is a sensor in the seats of your BMW 545i that signals the computer there is someone in the seat and will turn on or off the passenger air bag. If you have leather seats that are not soft...

The security chip is designed to keep your vehicle from starting without the owner's key. Unfortunately, you will need to obtain a key (https://www.yourmechanic.com/article/how-to-replace-a-car-key) with a chip and have it programed to the vehicle. A mobile locksmith may be able...

Hello. According to my resources, the serpentine belt size for your vehicle with the 3.9 liter engine is 97.3 inches long and 0.96 inches wide. The belt should also have seven grooves in it. The Dayco part number for this...

Hello and thanks for your question. You have an issue with either the alternator not producing any amperage or there is a bad connection from the battery to starter. Also, there could be an issue with the clutch switch. Check...

Hi there. The clicking noise in the right front may be, any number of possibilities. A loose wheel (https://www.yourmechanic.com/services/tighten-wheel-lug-nuts), a wheel bearing going bad (https://www.yourmechanic.com/services/wheel-bearings-replacement), possible brake pad movement, resulting from poor fitting pads (https://www.yourmechanic.com/services/brake-pads-replacement), a worn axle shaft cv...

Hello. Best first step would be to get an ABS scanner hooked up and extract the problem codes from the ABS system. This may be as simple as a malfunctioning wheel speed sensor (https://www.yourmechanic.com/services/wheel-speed-sensor-replacement). In N. America, this model (badged...

Greetings! This definitely sounds like you may have an alternator beginning to fail. As you know, the alternator (https://www.yourmechanic.com/services/alternator-replacement) is responsible for charging the battery. The rate at which this happens is correlated to the engine RPM's as the alternator...

This is often a sign of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a faulty transmission control solenoid. You may want to check to be sure the line was properly reconnected and that the transmission has not leaked any fluids. As you...

A common failure for these systems is water intrusion into the camera. If you look closely at the lens and see a droplet of water inside the camera, moisture has made it's way into the unit and may have caused...