Warning Lights & Problems

What car noises mean: squealing brakes, grinding, rattling underneath, clicking when turning, humming and knocking, with a noise chart and urgency guide.

What the check engine light means, solid vs flashing, common causes and codes, whether you can drive, how to read codes for free, and how to reset it.

Signs of a bad starter, how to tell it from a dead battery or alternator, quick checks, the tap trick, and what starter replacement costs.

What the ABS light, oil light and battery light mean, common causes, how urgent each one is, and whether it is safe to keep driving.

Signs of a bad alternator, how to tell it from a bad battery, how to test it with a multimeter, how long you can drive, and alternator replacement cost.

Signs of a bad car thermostat, stuck open vs stuck closed, how to tell it from a water pump or radiator problem, and what replacement costs.

Car AC blowing hot air? Usually low refrigerant from a leak, a compressor or clutch not engaging, a fan problem or a stuck blend door. Diagnose it step by step and see fix costs.

Car won’t start? Clicking usually means the battery, one click the starter, and cranking without starting points to fuel, spark or the immobilizer. Step-by-step fixes and costs.

Red dashboard lights mean stop, amber means check soon, green means a system is on. Identify every common car dashboard symbol by shape and color and know what to do.

Phone Bluetooth not connecting to your car? Try these fixes in order: restart, forget and re-pair, clear old phones, fix no-sound and dropouts, or add Bluetooth to an older car.

A gas smell usually means a loose gas cap, EVAP leak or fuel leak. Learn the causes by situation, repair costs, when it is unsafe to drive, and what other car smells mean.

Car shaking at highway speed, when braking, at idle or when accelerating? Match your symptom to the likely cause, see repair costs, and know when to stop driving.