LEXUS RX 300

1998 — 2003 of release

Repair and operation of the car

General information about settings and adjustments

"Settings" in the present manual are meant as not separately taken procedure of correction of the car, any of parameters of systems, and the whole complex of the adjustments allowing to achieve maximum efficiency of return of the engine.

If the owner of the new car from the date of its acquisition strictly adhered to the schedule of procedures of routine maintenance (see the Section Schedule of Routine Maintenance), rather often carried out checks of critical parameters, supported the required level of lubricant liquids, the engine will need extremely seldom performance of additional service and recovery repair (over replacement subject to the increased wear of components and expendables).

On the other hand, in case of the negligent relation to performing procedures of regular maintenance and violation of established periods of conducting checks, efficiency of return of the engine will surely decrease sooner or later. The probability of emergence of such situation in case of acquisition of the car which was in the use is especially high. In such cases there is a need for performance of a complex of settings of the power unit over amount of works on routine maintenance of the car.

The first step at control or diagnostics of malfunctions working with the lowered return of the engine always is check of compression pressure in cylinders (see the Head Dvigatel) which analysis of results allows to estimate the general condition of internal components of the engine and to draw up the plan of the forthcoming adjusting and/or recovery work. For example, if check of compression pressure revealed signs of serious internal wear of the engine, there will be not enough usual complex of settings to correct a situation, and its carrying out will be waste of time and means. In view of the value of information obtained as a result of check of compression pressure, its performance should be charged to rather skilled and qualified mechanic having necessary diagnostic units.

Lists of the main adjusting procedures allowing to achieve maximum efficiency of return from the engine which is in a working mechanical order are given below.

List of the minimum complex of checks and adjustments

• Check levels and existence of leak of working liquids (see the Section Check of Levels of Liquids, control of leaks);
• Check a condition of the rechargeable battery and if necessary clear its plugs (see the Section Check of a Condition of the Battery and Leaving behind it);
• Check all hoses located in a motive compartment, tubes and an electrical wiring for existence of leaks and wear (see the Section Check of a State and Replacement of Hoses of a Motive Compartment, localization of leaks);
• Check height of a protector and pressure of a rating of tires, including a spare wheel (see the Section Check of a Condition of Tires and Pressure of Their Rating, rotation of wheels);
• Check serviceability of functioning of all consumers of the electric power (lighting fixtures, a horn, control lamps, etc.) (see the Section Check of Operability of Lighting Fixtures, a horn and the fan of a heater).