Where is the rear control module of the 2004 Mercedes-Benz S350 located?
3 Answers
Two operation buttons are located, one on the driver's side door (behind the window button) and one on the trunk lid (directly above the license plate position). Below is the relevant introduction: Vehicle trunk: It can be electrically controlled to open and close. There is a door closing button inside the trunk door. By pressing the closing button, the trunk door can close automatically without manual intervention. Basic structure: The basic structure consists of two core shaft drive rods. The drive rods are composed of a main shaft drive, which includes an inner tube and an outer tube. The motor and gear inside the inner tube drive the threaded main shaft. The electric strut uses an electric main shaft located inside the motor within the strut to open and close.
As someone who frequently helps friends with car repairs, I know that the rear control module for the 2004 Mercedes-Benz S350 is typically located in the trunk area. Specifically, it's behind the left-side trim panel beneath the spare tire. You'll need to lift the trunk floor cover, remove the spare tire or storage compartment, and then you'll see a black control box mounted on the frame. This module is responsible for controlling the taillights, brake lights, and turn signals. If it fails, common symptoms include taillights not working or warning lights flashing, which can affect nighttime driving safety. It's advisable to first use a multimeter to test the circuit voltage and check for any short circuits to avoid unnecessary replacement. Additionally, inspect the module's connectors for rust or looseness, as older cars are prone to moisture damage and corrosion. Regular cleaning can help prevent issues. If you can't locate it, consulting the owner's manual or searching online for W220 chassis repair guides will provide more accurate information.
I encountered a similar issue with my old Mercedes. The rear control module in the 2004 S350 isn't too hard to locate - it's usually behind the right rear corner trim panel in the trunk. You'll need to remove the soft padding material to see it. This module controls the entire rear lighting system, including the backup camera signal. If it fails, not only will the taillights malfunction, but it may also trigger other minor electrical issues like false trouble codes. Before purchasing, I'd recommend checking spare part prices. There are many alternatives in the used market, but make sure to match the model number correctly since parts for 2004 models may be discontinued. Wear gloves during installation to avoid scratching the interior, and always test the fuse to ensure stable voltage - don't compromise your driving experience over minor issues.
