6 Warning Signs of Alternator Failure

6 Warning Signs of Alternator Failure


For your vehicle to reliably fire up and keep cruising smoothly down the road, you need a healthy alternator. When an alternator malfunctions, the battery can become drained to the extent that you end up unable to get moving. At the first sign of an alternator issue, you'll want to be proactive about addressing it. Here are six symptoms of alternator failure.

Dead Battery

New batteries should work dependably for at least three years. If yours dies sooner and not because of an obvious reason like leaving your headlights on, then alternator trouble could be to blame.

Dashboard Warning Light

It's often the case that the first indication of alternator trouble is an illuminated dash light that says ALT or GEN. Anytime a warning light comes on, you'll want to quickly pinpoint the underlying issue.

Malfunctioning Headlights

When an alternator isn't working properly, headlights may start acting erratically. Dimming or flickering headlights pose a significant safety hazard if you have to drive on roads that aren't lit up by streetlights.

Problems with Electrical Accessories

Newer vehicles regularly have computers that calculate which electrical accessories should have their power supply reduced when the alternator is malfunctioning. This saves power for the vehicle's most crucial electrical functions, but could be why an accessory such as power seats isn't working right.

Stalling Out

A faulty alternator may prevent spark plugs from receiving adequate power. This could consequently cause your vehicle to stall.

Belt Issue

If you have reason to believe that your vehicle is experiencing alternator trouble, then you should pop your hood to take a quick look. If you can see that a belt is cracked or isn't fitting correctly, then you may have spotted the source of your alternator issue.

If you need auto repair, be sure to bring your vehicle to a reputable mechanic. For alternator replacement & electrical system repair in Troy, Moscow Hills, and Winfield, MO, contact the experts at CNC Automotive & Diesel Repair at (636) 242-5062. Feel free to give CNC Automotive & Diesel Repair a call today to make an appointment for any of your vehicle's repair or maintenance needs!


CNC Automotive & Diesel Repair Blog
Posted: April 13, 2021

Written and Published By MORBiZ