Lexus Belts And Hoses

When Should Lexus Belts and Hoses be Replaced?

Hybrids like Lexus CT 200h and Lexus GS 450h. A sedan like the Lexus IS 250. A sports car like the Lexus RC F. All legendary Lexus vehicles, beloved for their ideal combinations of performance, reliability, and enviable luxury.

So, when one starts not running right, or at all, with no obvious reason why, it can be a little scary.

That's because the problem could be anything. Most often, though, it's not a failed starter or a broken spark plug or a blown head gasket -- it's just a worn-out belt or a bad hose. Seems simple, doesn't it? A little too simple, perhaps. That's because of just how important both belts and hoses are.

Belts and Hoses 101

Their jobs: to move everything under the hood of a Lexus vehicle that's designed to move -- belts, mechanically, and hoses, hydraulically (using liquid pressure). And we mean everything.

Serpentine belts, drive belts (V-belts), and timing belts, for instance -- they drive alternators, AC compressors, and power steering pumps and turn crankshafts and camshafts to sync engine valves and pistons, respectively. And hoses -- they run everything from cooling system parts like radiators and heater cores to fuel systems, brakes, air intakes, and even oil coolers and positive crankcase ventilation (PCV) valves.

So, when one of these systems stops working, you'll know it -- and it'll be worth an inspection. Look (and listen) for the signs.

Symptoms of Bad Belts and Hoses

They'll tell you the trouble's most likely a faulty belt or a hose failure. Otherwise, when to change either, it's straightforward -- most belts, according to mileage (serpentine belts, every 90,000 miles; timing belts, every 60,000 to 90,000 miles; timing chains, not unless they break), and most hoses, every 4 years. Check your owner's manual for specifics; it'll have a maintenance schedule you can follow.

Not sure what to do, how to do it, or when? When in doubt, ask the pros at a certified Lexus service center; dealers are always happy to help.

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