Lexus RX 400 Workshop Manuals and Repair Manuals

To change a headlight bulb on your Lexus RX 400, you will need to access the back of the headlight assembly by opening the hood. Disconnect the electrical connector from the bulb, remove the retaining clip or cover, and then carefully remove the old bulb. Install the new bulb, ensuring it is properly seated, and reassemble the components in reverse order. It is recommended to consult the owner's manual for specific instructions and bulb replacement specifications.

To change the cabin air filter in your Lexus RX 400, locate the filter housing, which is usually located behind the glove compartment or under the dashboard. Remove the cover or access panel, take out the old filter, and replace it with a new one. Ensure the filter is properly seated, and then reassemble the components. Regularly changing the cabin air filter helps maintain good air quality inside the vehicle and improves the efficiency of the HVAC system.

To change the windshield wiper blades on your Lexus RX 400, lift the wiper arm away from the windshield and locate the release tab or button on the blade assembly. Press or slide the tab/button to release the old blade, then slide the new blade into place until it clicks. Ensure the blade is securely attached, and then carefully lower the wiper arm back onto the windshield. It is recommended to consult the owner's manual for specific instructions and wiper blade replacement specifications.

To check the coolant level in your Lexus RX 400, ensure the engine is cool and the vehicle is parked on a level surface. Locate the coolant reservoir, typically a translucent plastic tank, and check the fluid level against the "full" and "low" markings on the reservoir. If the coolant level is low, add a 50/50 mixture of coolant and distilled water to bring it to the appropriate level. It is important to use the correct type of coolant as specified in the owner's manual.

To check the transmission fluid on your Lexus RX 400, ensure the vehicle is parked on a level surface and the engine is running. Locate the transmission dipstick, usually labeled and located near the back of the engine compartment. Pull out the dipstick, wipe it clean, reinsert it fully, and then remove it again to check the fluid level. The fluid should be within the designated range, as indicated on the dipstick. If the fluid is low, add the appropriate type of transmission fluid as specified in the owner's manual.

To program a new key fob for your Lexus RX 400, you will need to follow a specific sequence of steps, which may vary depending on the model year of your vehicle. Generally, the process involves inserting the key into the ignition, cycling the key on and off, and then pressing a combination of buttons on the key fob. It is recommended to consult the owner's manual for detailed instructions on how to program a new key fob for your specific model.

To replace the battery in your Lexus RX 400 key fob, you will need to use a small flathead screwdriver or a coin to pry open the case. Once the case is open, carefully remove the old battery and replace it with a new one of the same type and size. Ensure the battery is properly seated, and then reassemble the key fob by snapping the case back together. It is recommended to consult the owner's manual for specific instructions and battery replacement specifications.

To reset the maintenance light on your Lexus RX 400, press and hold the trip meter reset button while turning the ignition switch to the "on" position (without starting the engine). Continue holding the button until the maintenance light goes off, which usually takes about 5-10 seconds. This procedure may vary slightly depending on the specific model year of your vehicle, so it's recommended to consult the owner's manual for detailed instructions.

If you are experiencing issues with the air conditioning system in your Lexus RX 400, start by checking the fuse associated with the A/C system. If the fuse is intact, ensure that the temperature and fan controls are set correctly. If the system is still not cooling, there may be a problem with the compressor, refrigerant levels, or other components, which would require further inspection and potentially professional repair. It is recommended to consult the owner's manual or a Lexus repair manual for detailed troubleshooting steps and diagrams.

If you are experiencing issues with a power window in your Lexus RX 400, start by checking the fuse associated with the power windows. If the fuse is intact, try operating the window from both the driver's control panel and the individual door switch. If the window still does not work, there may be a problem with the window motor or regulator, which would require further inspection and potentially professional repair. It is recommended to consult the owner's manual or a Lexus repair manual for detailed troubleshooting steps and diagrams.

The oil in your Lexus RX 400 should be changed every 5,000 to 7,500 miles, or as recommended by the manufacturer. Regular oil changes are essential for maintaining the engine's performance and prolonging its lifespan. Neglecting to change the oil on time can lead to increased friction and wear, potentially causing engine damage.

The air filter in your Lexus RX 400 should be replaced every 15,000 to 30,000 miles, depending on driving conditions and air quality. A clogged or dirty air filter can restrict airflow to the engine, reducing fuel efficiency and potentially causing damage. Regularly inspecting and replacing the air filter as needed will help maintain proper engine performance.

It is generally recommended to rotate the tires on your Lexus RX 400 every 5,000 to 7,500 miles, or as specified in the owner's manual. Regular tire rotations help ensure even wear and prolong tire life. It is also important to check the tire pressure regularly and maintain it at the recommended levels for optimal performance and safety.

Your Lexus RX 400 requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel can lead to knocking or pinging noises in the engine, reduced fuel efficiency, and potentially even engine damage. It is important to follow the manufacturer's recommendations for fuel to ensure optimal performance and avoid any potential issues.