Signal Acquisition Module Rear W164 SAM for Mercedes-Benz

Rear Signal Acquisition Module (SAM) for Mercedes-Benz W164 (TPA1649005101)

Replacement part for: 1649005101, 

Compatible Vehicles:

• Mercedes-Benz ML-Class (W164): 2006–2011 (ML320, ML350, ML450, ML500, ML550, ML63 AMG)

• Mercedes-Benz GL-Class (X164): 2007–2012 (GL320, GL350, GL450, GL550)

• Mercedes-Benz R-Class (W251 / V251): 2006–2017

• Excludes vehicles with factory code 848 (no communication module).

Position: Rear – right-hand side behind the rear seat (under the right-side rear seat cushion)

Key Features & Functions:

• Central control unit for rear electrical systems and CAN‑BUS gateway.

• Controls rear lighting (turn signals, brake lights, tail lights, license plate light, high‑mounted stop lamp).

• Manages rear wiper, heated rear window, central locking, tailgate, fuel filler flap and anti‑theft alarm (ATA).

• Reads fuel‑tank level sensors (1 & 2).

• Integrates trailer detection and towing‑sensor functions.

• Switches relays for heated rear window, trailer circuit and electric loading floor.

Common Failure Symptoms:

• Rear lights not working or flickering

• Fuel gauge reading empty / full constantly

• Tailgate or fuel flap not unlocking

• Alarm system malfunctions (e.g., no sound, random flashing)

• Rear wiper or heated screen not responding

• Error codes for CAN‑B communication faults

Installation & Coding Requirements:

• Wiring: Direct plug‑and‑play using original connectors.

• Coding: Module is VIN‑coded to the vehicle. Professional programming with Mercedes XENTRY / DAS or Vediamo is required after installation; otherwise the module will not function correctly.

• Location: Accessible by removing the right‑hand rear seat cushion. Fixed to chassis with two screws.

• Professional installation is strongly recommended.

Specifications:

• Material: High‑quality ABS plastic / metal (meets OEM specifications)

• Fit: Precision‑engineered to factory mounting points

• Voltage: 12 V DC

• Condition: Brand New – Aftermarket Replacement

This is an aftermarket replacement part, not an original Mercedes-Benz product. Mercedes-Benz names and model designations are used for compatibility purposes only. Verify your existing part number before ordering.