The GS 400 vehicle model is manufactured by Lexus, the parent company of Toyota Motor Co. Lexus GS 400 models were introduced in 1998 and were discontinued in 2000. Read your vehicle maintenance manual to identify recommended service dates for your GS 400. Service in Lexus dealerships may be more costly; however, dealership service personnel are trained to diagnose problems for the GS 400 and also offer preventative maintenance.
Lexus GS 400 models on the road are likely to have high mileage, since they have been out of production for a while. Therefore, you must check your vehicle maintenance guide to determine at what mileage ratings a timing belt should be changed. This job may include replacement of the water pump, the thermostat, front engine seals, the tensioner, the serpentine belt and coolant. The average fee is approximately $620, as of November 2010, at your local Lexus dealership. Proper functioning of your GS 400 depends on this service to avoid engine malfunction.
The radiator in a Lexus GS 400 is essential to the vehicle's cooling system. Be sure to check your radiator at regular intervals. The time period will be listed in your vehicle maintenance guide or you can call your local Lexus service department to inquire about radiator and hose service. The radiator must be checked for leaks, corrosion and cracks. Preventive maintenance will allow you to replace the radiator in advance, so that your GS 400 will not shut down on the road.
Tune-up service includes spark plugs, tire rotation and/or balancing, new wiper blades, fluid changes with a new filter, a brake check and a driveshaft check. Service quotes from Lexus dealerships are dependent upon the care and mileage of your GS 400.
If you experience problems such as windows that do not roll down, side-view mirrors that do not move, or interior warning lights that signal an electrical problem, go to a Lexus dealership for repair service. In the event of a poorly replaced windshield, water can cause the electronic control unit (ECU) to malfunction. If this problem is ignored, all electrical components would eventually malfunction. Early diagnostic testing can save thousands of dollars on costly electrical repairs.
