Resetting Your 2002 Mercedes CLK320: A Comprehensive Guide

Experiencing electrical quirks or system glitches in your 2002 Mercedes Clk320 can be frustrating. Often, these issues arise after a battery replacement or disconnection. Fortunately, many common problems can be resolved by performing simple reset procedures. This guide provides step-by-step instructions to reset various systems in your 2002 Mercedes CLK320, ensuring your car returns to optimal performance.

Battery Reset Procedure for Your 2002 Mercedes CLK320

This reset is crucial after a battery change and can resolve issues like window malfunction. Follow these steps carefully:

1. Preparation is Key: Ensure your steering wheel is straight, all windows are fully closed, the sunroof (if equipped) is completely shut, and the parking brake is released.
2. System Shutdown: Turn off your stereo, noting down your anti-theft code if needed. Switch off the heat/AC blower and headlights.
3. Unlock Doors: Make sure all doors are unlocked.
4. Disconnect Battery: Disconnect the car battery for 30 seconds, then reconnect it securely.
5. Ignition Position 2: Enter your 2002 Mercedes CLK320, close the door, and turn the ignition key to position 2 (just before starting the engine). Do not start the engine yet.
6. Window Reset: Lower both windows simultaneously by pressing the switches to the point just before the automatic ‘click’. Once fully down, press both switches fully down until they click and hold for 3 seconds. Repeat this process for closing the windows: raise both windows together, and once fully closed, click and hold the switches for 3 seconds.
7. Climate Control Calibration: Turn on the blower and set both sides of your climate control to 72 degrees (if applicable to your CLK320’s system) by pressing the up and down buttons together. This calibrates the ECU.
8. Stereo Code Entry: Turn on your stereo and enter your anti-theft code.
9. Sunroof Reset: Fully retract and then fully close your sunroof. Then, tilt it up and close it again.
10. Lights Check: Turn all lights on and off, including fog lights.
11. Ignition Off: Turn the ignition key back to position 0.
12. Start Engine: Start your 2002 Mercedes CLK320 engine. Initially, ABS and ESP malfunction lights might appear.
13. ABS and ESP Calibration: Calibrate these systems by turning the steering wheel fully to the right, then fully to the left, and then back to the center. The ABS and ESP lights should disappear.
14. Idle and Drive: Let your car idle for about 5 minutes before driving. Begin driving slowly, gradually increasing speed to allow the ECU to relearn sensor readings and optimize performance.

Throttle Reset Procedure for Your 2002 Mercedes CLK320

Perform a throttle reset to improve shift patterns and smoothness in your 2002 Mercedes CLK320:

1. Get In and Close Door: Enter your CLK320 and shut the door.
2. Ignition Position 2: Turn the key to position 2 (just before starting the engine).
3. Depress Gas Pedal: Firmly press the gas pedal all the way to the floor, going past the kick-down point.
4. Hold Pedal for 15 Seconds: Maintain the pedal position for 15 seconds.
5. Turn Key Off (No Release): While still holding the gas pedal down, turn the ignition key to the off position (position 0), but do not remove the key.
6. Release Pedal and Wait: Release the gas pedal and wait for 3 minutes. Do not do anything during this time. You might hear a click sound near the ignition key area around the 3-minute mark.
7. Start and Drive: After 3 minutes, start your 2002 Mercedes CLK320 and drive normally. You should notice smoother gear shifts and improved throttle response.

Service Reset Procedure for Your 2002 Mercedes CLK320

Reset the service notification on your 2002 Mercedes CLK320 after maintenance:

1. Ignition Position 2: Turn the ignition key to position 2, all the way ON, but do not start the engine.
2. Access Service Notification: Use the steering wheel buttons to scroll through the display menu until you find the A/B Service notification.
3. Initiate Reset: Press and hold the “R” or reset button on the instrument cluster. After a few seconds, a message will appear asking if you want to reset the service notification. Release the “R” button at this point.
4. Confirm Reset: Press and hold the “R” button again until the reset is complete. The display will confirm the service reset.

Passenger Mirror Auto-Dip Reset for Your 2002 Mercedes CLK320

Reset the auto-dip function of your passenger side mirror:

1. Ignition Position 2: Turn the key to position 2.
2. Engage Reverse Gear: Select reverse gear. The passenger mirror should dip down.
3. Adjust Mirror: Adjust the mirror downwards to your preferred reversing view using the mirror adjustment controls, ensuring you can see the curb.
4. Store Position: Press and hold the green store button on the driver’s door control panel (next to the seat adjustment buttons) for a couple of seconds. Within 3 seconds of releasing the store button, press any direction on the mirror control button once. This stores the dipped mirror position.
5. Return to Park: Shift the gear selector back to Park.
6. Wait and Return: Wait for approximately 17 seconds. The mirror should automatically return to its normal driving position.
7. Test Dip Function: Select reverse gear again to test if the auto-dip function is working correctly. The mirror should now dip when reverse is engaged.

By following these reset procedures, you can address common electronic issues in your 2002 Mercedes CLK320 and maintain its optimal performance. Remember to perform these steps carefully and consult a professional mechanic if you encounter persistent problems.