Lexus RX 300 Workshop Manuals and Repair Manuals

To change the air filter on a Lexus RX 300, locate the air filter housing, typically located on the passenger side of the engine compartment. Remove the clips or screws securing the housing, open it, and carefully lift out the old air filter. Clean any debris from the housing, then insert the new air filter and secure the housing back in place. Refer to the vehicle's manual for detailed instructions and illustrations.

To check and add brake fluid on a Lexus RX 300, locate the brake fluid reservoir under the hood, usually near the firewall on the driver's side. Clean the area around the reservoir cap, then remove it. Check the fluid level against the "MAX" and "MIN" marks on the side of the reservoir. If the level is below the "MIN" mark, add the appropriate type of brake fluid until it reaches the "MAX" mark. Consult the vehicle's manual for the specific brake fluid type and any additional instructions.

To check the engine oil level on a Lexus RX 300, park the vehicle on a level surface, wait for the engine to cool down, and locate the dipstick under the hood. Pull out the dipstick, wipe it clean, reinsert it fully, and then remove it again to check the oil level. The oil level should be between the "L" (low) and "F" (full) marks on the dipstick.

To jump-start a Lexus RX 300, park a vehicle with a functioning battery close enough to the dead vehicle for the jumper cables to reach both batteries. Ensure both vehicles are turned off, then connect the positive (+) jumper cable clamp to the positive terminal of the dead battery, followed by connecting the other positive clamp to the positive terminal of the working battery. Connect the negative (-) clamp to the negative terminal of the working battery, and finally, connect the other negative clamp to a metal, unpainted surface on the engine block of the dead vehicle. Start the functioning vehicle, let it idle for a few minutes, then attempt to start the dead vehicle. Consult the vehicle's manual for any specific jump-starting instructions or precautions.

To replace a burnt-out headlight bulb on a Lexus RX 300, open the hood and locate the headlight assembly at the front of the vehicle. Disconnect the electrical connector from the back of the headlight, then twist and remove the bulb socket. Replace the old bulb with a new one, ensuring it is securely seated, and reconnect the electrical connector. Refer to the vehicle's manual for specific instructions and illustrations.

To replace a faulty spark plug on a Lexus RX 300, locate the spark plug wires or ignition coils, depending on the specific engine configuration. Carefully disconnect the wire or coil from the spark plug, then use a spark plug socket and ratchet to remove the old spark plug. After removing the old plug, inspect the new spark plug for any damage or defects before installing it. Tighten the new spark plug to the manufacturer's recommended torque specifications, then reconnect the wire or coil. It is essential to consult the vehicle's manual for the exact spark plug type, gap, and torque specifications.

To replace a malfunctioning oxygen sensor on a Lexus RX 300, locate the sensor(s) in the exhaust system, usually near the catalytic converter or exhaust manifold. Unplug the electrical connector from the sensor, then use an appropriate oxygen sensor socket and ratchet to remove the old sensor. Install the new sensor, ensuring it is properly threaded and tightened to the manufacturer's specifications. Reconnect the electrical connector and clear any related error codes using a diagnostic tool if necessary. Refer to the vehicle's manual for specific instructions and illustrations.

To replace a windshield wiper blade on a Lexus RX 300, lift the wiper arm away from the windshield and locate the release tab or button on the wiper blade assembly. Press or slide the tab/button to release the old wiper blade, then carefully remove it from the wiper arm. Align the new wiper blade with the arm and secure it in place by pressing or sliding the release tab/button. Ensure the wiper blade is properly attached before lowering the arm back onto the windshield. Refer to the vehicle's manual for specific instructions and illustrations.

To replace the cabin air filter on a Lexus RX 300, locate the filter housing, usually located behind the glove box or under the dashboard on the passenger side. Open the housing by removing any clips or screws, then slide out the old cabin air filter. Insert the new filter, ensuring it is properly aligned, and secure the housing back in place. Refer to the vehicle's manual for specific instructions and illustrations.

To replace the serpentine belt on a Lexus RX 300, locate the belt tensioner pulley and use a wrench or socket to rotate it counterclockwise, releasing tension on the belt. Slide the belt off one of the pulleys, then slowly release the tensioner. Remove the old belt from the remaining pulleys, ensuring to note the belt routing for proper installation of the new belt. Install the new belt, following the correct routing pattern, and use the tensioner to create tension on the belt. Consult the vehicle's manual for specific instructions, belt routing diagrams, and any additional steps.

To reset the maintenance light on a Lexus RX 300, turn the ignition switch to the "ON" position without starting the engine. Locate the trip meter reset button, usually located within the instrument cluster, and press and hold it until the maintenance light begins to flash. Release the button, then press and hold it again until the maintenance light turns off, indicating the reset is complete. Consult the vehicle's manual for the exact procedure and any additional steps.

The timing belt on a Lexus RX 300 should be replaced at regular intervals, typically every 90,000 to 100,000 miles or every 6 to 7 years, whichever comes first. It is essential to replace the timing belt within the recommended timeframe to prevent potential engine damage if the belt were to fail. Consult the vehicle's manual for the exact replacement interval and procedure.

The recommended tire pressure for a Lexus RX 300 can vary depending on factors such as load, driving conditions, and tire type. Generally, the recommended tire pressure is between 30 to 35 psi (pounds per square inch) for all four tires. However, it is crucial to check the vehicle's manual or the tire placard located on the driver's side door jamb for the exact recommended pressure for your specific model and tire size.

It is recommended to use a high-quality ethylene glycol-based coolant with a 50/50 mixture of coolant and distilled water for a Lexus RX 300. This mixture provides proper protection against freezing and overheating, as well as corrosion prevention for the cooling system. Make sure to consult the vehicle's manual for the exact specifications and any specific coolant recommendations.