Common Lexus Noises - What Could They Mean?

Published 2 months ago — by Lisa Federico

Better get your Lexus to your neighborhood Lexus service shop!

Better get your Lexus to your neighborhood Lexus service shop!
Photo Credit: Tim Caynes

What’s that sound? No, it’s not the boomin’ system pumping Rock the Bells on Sirius/XM as you cruise down the expressway…it might be something more. While it’s common to hear some sounds, like rattles inside the cabin (hellllo to my VW Jetta, I’m looking at you!) which generally doesn’t mean anything serious, but there are some other common noises that may indicate an issue in your Lexus.

Below are some typical sounds you may hear in your Lexus and what they may possibly mean now, or down the road.

Squealing/Screeching
Brakes: You may hear this if your brake pads are worn out and need replacing.
Belts: Serpentine or timing belts that are worn or loose can cause high-pitched squealing.

Grinding
Transmission: You may have a clutch or transmission issue if you hear grinding when shifting gears.
Brakes: Generally if it’s the brakes making the grinding noise it is due to the brake pads being worn and metal is grinding against metal. This will damage your rotors.

Rattling
Exhaust: If your exhaust system has a damaged or loose component it can cause a rattling noise coming from underneath your Lexus.

Knocking
Engine: A knocking noise coming from the engine can mean a seized engine or when accelerating and can indicate a problem with the fuel-air mixture or the timing of the engine.
Suspension: Do you hear knocking noises when driving over bumps? This could be an issue with the struts, shocks or bushings.

Clicking/Ticking/Tapping
Engine: If ticking/tapping sounds are coming from the engine during start-up and while accelerating, it may be related to low oil levels, lifter issues or internal wear.
CV Joints: A worn CV joint may be the problem if you hear a clicking sound when turning at low speeds.

Humming
Tires: Uneven tire wear or wheel bearing issues may cause a humming noise.
Transmission: If you hear a humming noise from the transmission it might be due to transmission fluid issues or internal wear.

Growling/Roaring
Wheel Bearings: You may have a failing wheel bearing if you hear a growling noise that changes as your Lexus goes faster.
Exhaust: A loud roar can happen if there is a hole in the exhaust system of your Lexus or if you have a damaged muffler.

Hissing
Engine: No it’s not a snake in your hood, it may be a coolant or vacuum leak or even an overheating engine.

Banging
Exhaust: A loud bang from the exhaust can be a backfire. This is possibly due to a fuel ignition in the exhaust system.
Suspension: Loud bangs when driving over bumps may indicate a sign of damaged suspension components.

Identifying these sounds and addressing them early can help prevent more serious Lexus issues down the road. As a best practice, have your BMW serviced routinely!

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