Mercedes-Benz W230 SL350 SL-Class Front SAM Control Module A2305454032 - Used Original Parts

Quick Answer

A front SAM module is the right fix when the SL350 shows several unrelated electrical faults at once (lights, wipers, horn) and the wiring and fuses test good. A tested used original unit makes sense in Malaysia because the humid, wet climate is what usually kills these modules. A used unit also avoids the high cost and long wait of a new dealer-order part on an older R230 chassis.

Diagnosis and Common Symptoms

The front SAM (Signal Acquisition and Actuation Module) on the W230 SL350 sits in the engine bay and handles many of the front electrical loads. These include exterior lighting, the horn, the wipers and washer, and fuse and relay switching. Moisture getting in through the connectors and housing, followed by corrosion on the internal board, is the most common cause of failure.

Typical symptoms:

• Headlamps, fog lamps, or indicators that stop working or work intermittently with no blown bulb
• Wipers that will not park, run continuously, or do not respond to the stalk
• Horn that sounds on its own or does not sound at all
• Dashboard warnings for exterior lamp failure that do not clear after bulb replacement
• Battery drain overnight because the module does not go to sleep
• Several unrelated functions failing at the same time
• Fault codes stored in the front SAM, or "no communication" codes for the module when scanned with Xentry/DAS

Before condemning the module, check the fuses and relays, the ground points, and the connectors for green or white corrosion. A proper scan of the SAM fault memory is needed to separate a failed module from a wiring fault. If the SAM does not respond on the CAN bus, or the codes point to its internal outputs, replacement is the correct repair.

Introduction

This is a Genuine Used front SAM control module pulled from a Mercedes-Benz W230 SL350 SL-Class. Every unit is bench and function tested before listing, so you receive a working module and not a guess. A tested Genuine used module keeps the original hardware and connector fit of the factory part. It also costs far less than a new unit. It suits owners who want the SL's lighting, wiper, and horn functions restored without paying new-part prices.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W230 SL350 SL-Class
• Part Name: Front SAM Control Module (Signal Acquisition and Actuation Module)
• Condition: Genuine Used (Tested Working)
• Notes: Part number A2305454032. Match the number on your old module's label before ordering. A used SAM normally needs to be coded to the car with Xentry/DAS (or an equivalent tool) after installation. Disconnect the battery before swapping, and check the connectors for corrosion so the fault does not repeat.