The serpentine belt (also known as the drive belt) is a reinforced rubber belt that delivers power from the crankshaft to multiple accessories of a vehicle such as the air conditioning, alternator, water pump, etc. Since it drives critical components of a vehicle, it is important to perform regular inspections of the serpentine belt and to replace it when it is required to do so. he replacement of the serpentine belt can be a quick and easy job if you are aware of a couple things that could possibly throw you off-course.

The serpentine belt (a.k.a. the drive belt) plays an important part in running the various pulleys tied to critical components of your vehicle. There aren’t really any specific drive belt change intervals on the Lexus IS350, but it is typically recommended anywhere from every 90k miles to 120k miles. Given that drive belts are very easy to replace and the belt itself costs somewhere between $20 and $30, it’s worth it to be a bit more conservative on your change intervals for this part.