Mercedes-Benz W212 Facelift Left Rear Trunk Lid Taillight - Used Original Parts

Diagnosis and Common Symptoms

From a technical standpoint, failure of the W212 facelift inner taillight is almost always electronic, originating from the internal LED circuit board. Water ingress past a failing seal is a primary catalyst, leading to corrosion and short circuits on the board. This manifests as specific, non-functional LED segments—often the brake light or turn signal—or complete unit failure.

The vehicle's Rear Signal Acquisition Module (Rear SAM) will detect this fault, typically an open or short circuit. This triggers dashboard warnings such as "Check Left Rear Tail Lamp" or "Check Left Rear Turn Signal." Diagnostic scans will reveal fault codes pointing to implausible signals or circuit failures for the specific lighting function (e.g., Brake Lamp Actuation, Turn Signal Left Rear). Intermittent flickering is an early symptom, progressing to a permanent outage.

Introduction

Restore the signature illumination and safety of your E-Class with a Genuine Mercedes-Benz replacement part. This is not a low-quality aftermarket copy; it is a meticulously inspected and bench-tested original unit removed from a donor vehicle. We have verified all LED functions to ensure they meet factory performance standards, offering a reliable and cost-effective solution to taillight failure.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W212 E-Class Saloon (Facelift models, 2014-2016)
• Part Name: Left Rear Taillight (Inner Trunk Lid Section)
• Condition: Genuine Used (Tested Working)
• Notes: All LED circuits and diodes confirmed operational under load testing. Connector pins are clean and free of corrosion or damage. The lens has been inspected for clarity and is free of cracks.