Mercedes-Benz E-Class Headlights: Specs, Fitment & Common Faults
Bulb type, unit part numbers, and the faults that actually cause that flickering or dim light you've noticed.
Illustration for editorial purposes
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OEM Part Number: A2139066501 / A2139066601 (LH / RH LED, as quoted in catalogue listings — confirm via VIN) — aftermarket LH Hella 1EX 014 215-411 / RH Hella 1EX 014 215-421
| Passenger side (LH / nearside) headlight — aftermarket | Hella 1EX 014 215-411 (Bi-LED, LED DRL); Hella 1LX 012 076-531 (LED, LED DRL); Hella 1EX 012 076-511 (LED, LED DRL); Diederichs 1618083 (LED, OE A2139066501); Hella 1ZT 011 705-111 (bi-xenon D1S/H7, electric motor, bulbs included); Hella 1LL 010 800-031 (halogen H7/H7, PY21W, W5W, electric motor, bulbs included) |
|---|---|
| Driver's side (RH / offside) headlight — aftermarket | Hella 1EX 014 215-421 (Bi-LED, LED DRL); Hella 1LX 012 076-541 (LED, LED DRL); Hella 1EX 012 076-521 (LED, LED DRL); Diederichs 1618082 (LED, OE A2139066601); Hella 1ZT 011 733-061 (bi-xenon D1S/H7 with LED DRL, electric motor, bulbs included); Hella 1EL 009 647-921 (halogen H7/H7, PY21W, W5W, electric motor, bulbs included) |
| Bulb types | halogen dipped/main H7 with PY21W and W5W; bi-xenon D1S/H7; LED units take no bulbs |
| Genuine (OE) numbers quoted | Diederichs 1618083 (LH LED) A2139066501; Diederichs 1618082 (RH LED) A2139066601; other listings say to check the OE number |
| Fitment notes | Match side, lamp type and levelling. |
A Genuinely Important UK Rule Worth Knowing Before You Buy — Mercedes-Benz E-Class Headlights
If your E-Class has factory-fitted halogen headlamp housings, converting them to fit LED bulbs is treated as a definite MOT failure under the current inspection manual — this isn't a grey area or a minor advisory, since a housing designed for halogen doesn't distribute an LED bulb's light output correctly, which can genuinely dazzle oncoming drivers. If you want a genuine LED upgrade, the correct route is a complete headlight unit designed for LED from the factory, not a bulb swap into an existing halogen housing.
Mercedes-Benz E-Class Headlights: Watch: Replacing It
Covers W213 headlight replacement
Mercedes-Benz E-Class Headlights: What It Does
The Mercedes-Benz E-Class's headlight unit houses the main and dipped beam bulbs (or LED/matrix modules on higher trims), positioned and angled to illuminate the road ahead without excessively dazzling oncoming traffic. Many modern units also integrate the daytime running light and front indicator into the same housing, which affects both the part number and the complexity of any repair.
Mercedes-Benz E-Class Headlights: Generations, Derivatives & Headlight Type
| W212 (2009–2016) | LED low beam paired with Halogen high beam on some trims — genuinely a mixed-technology setup, not full LED on both beams |
|---|---|
| W213/W238 (2016–present), standard | Full LED as standard |
| W213/W238, higher trims | Multibeam LED — genuine second-generation Mercedes tech using 84 individually controlled LEDs per unit and a windshield-mounted camera to mask light aimed at oncoming traffic within a fraction of a second, while still illuminating the areas around them; this specific generation's design won a Red Dot Design Award |
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Mercedes-Benz E-Class Headlights: Common Faults, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Headlights Guide for the four bulb technologies and how they differ, UK law on aim and modifications, common faults to check for, how difficult this job is to DIY, and confirming fitment against your VIN.
More Mercedes-Benz Headlights
The same part, covered across other Mercedes-Benz models.