2007 Mercedes s550 Air Suspension Reset Guide

Have you ever faced issues with the air suspension on your 2007 Mercedes S550? This advanced system, pivotal for the luxurious and smooth ride the S550 is known for, can sometimes require a reset. The air suspension system adjusts the car’s height, improving aerodynamics and comfort.

Resetting the air suspension can seem daunting, but it’s a necessary step to maintain your vehicle’s optimal performance. Whether it’s due to routine maintenance or addressing a specific issue, understanding how to reset the air suspension is crucial for any S550 owner.

Here is a step-by-step guide to reset the air suspension on a 2007 Mercedes-Benz S550:

Prepare the Vehicle

Park the vehicle on a level surface and apply the parking brake.
Turn off all accessories and close all doors.
Allow the vehicle to cool down completely if it has been driven recently.

Put the Vehicle in Service Mode

Open the driver’s door and turn the ignition to position 2 (without starting the engine).
Press and hold the “4” button on the instrument cluster for approximately 5 seconds until the message “Service Mode Activated” appears.

Initiate the Reset Procedure

Ensure the vehicle is in “Normal” ride height mode (not raised or lowered).
Press and hold the “3” button on the instrument cluster for approximately 5 seconds until the message “Control Module Initializing” appears.
Release the “3” button and wait for the initialization process to complete.

Calibrate the Ride Height Sensors

Exit the vehicle and close all doors.
Using the key, lock and unlock the vehicle to wake up the suspension control module.
The vehicle will start to lower itself to the ground, and the suspension will cycle through various ride heights.
Do not open any doors or turn off the ignition during this process.

Finalize the Reset

Once the vehicle has completed the calibration process and reached its normal ride height, turn off the ignition.
Open and close the driver’s door to exit the service mode.

Test and Verify

Start the engine and let it idle for a few minutes.
Shift the transmission into reverse and then drive to test the air suspension at different ride heights.
Monitor the suspension’s behavior and ensure it is operating correctly.

FAQ

Why do I need to reset the air suspension?
Resetting the air suspension may be necessary after replacing components, detecting faults, or if the system is not operating correctly. A reset calibrates the ride height sensors and allows the control module to relearn the proper settings for optimal performance.

Can I reset the air suspension myself, or do I need to visit a Mercedes-Benz dealer?
Yes, you can reset the air suspension yourself by following the step-by-step procedure outlined in the guide. However, if you encounter any issues or error messages persist after the reset, it’s recommended to have the system diagnosed by a professional Mercedes-Benz technician.

How long does the reset process take?
The reset process can take anywhere from 15 to 30 minutes, depending on how long it takes for the vehicle to complete the calibration and cycling through various ride heights.

What happens if I open a door or turn off the ignition during the reset process?
It’s crucial not to open any doors or turn off the ignition during the reset process, as this can interrupt the calibration and cause the procedure to fail. If interrupted, you may need to start the reset process from the beginning.

Will resetting the air suspension clear any existing fault codes?
Yes, resetting the air suspension will typically clear any existing fault codes or adaptations stored in the control module. However, if an underlying issue exists, the fault codes may reappear after the reset.