What Are the Signs of a Bad Alternator?

One of the most important parts of your Mercedes-Benz vehicle is the alternator, acting as a mini generator that powers your car’s electrical systems and recharges the battery while the engine is running. If you’re asking, What are the signs of a bad alternator?, being able to recognize the signs of alternator failure is key. Here at Mercedes-Benz of Owings Mills, our team of technicians is happy to help diagnose alternator issues.

Dashboard Warning Light

Often, the first and most obvious indication of a problem is an illuminated dashboard warning light. A warning light shaped like a battery that says “ALT” or “Generator” is your vehicle’s way of telling you that there is an issue with the charging system. Do not ignore this light; schedule an appointment with us promptly.

Dimming Lights and Slow Electronics

A failing alternator struggles to produce a consistent electrical current. You may notice that your headlights and dashboard light begin to flicker or grow dim, especially when idling. Additionally, power-hungry accessories like power windows, heated seats, or stereo systems may operate less efficiently than usual or not at all.

Difficulty Starting

While a dead battery can be the root cause of the car not starting, if your alternator is bad, it won’t be able to recharge the battery as you drive. This often leads to a Mercedes-Benz vehicle that is difficult to start or a battery that dies repeatedly, even after you jump-start it.

Unusual Noises or Smells

A whining or grinding sound coming from the engine bay can indicate that the bearings inside the alternator are wearing out. You may also notice the scent of burning rubber from a slipping serpentine belt that drives the alternator.

Schedule Alternator Service in Owings Mills, MD

If you notice any of the above signs of trouble, schedule service at Mercedes-Benz of Owings Mills. Our team of certified Mercedes-Benz technicians is here to get your alternator back into top condition.