Mercedes-Benz has been at the forefront of the automotive industry for over a century, continually evolving its lineup to meet modern demands. With the growing shift towards sustainability and eco-consciousness, Mercedes-Benz has introduced a series of electric vehicles (EVs), including the EQA H243. This model represents Mercedes-Benz’s commitment to bringing advanced technology and luxurious design into the EV market, appealing to drivers who prioritize both performance and environmental responsibility.
The EQA H243 is designed with cutting-edge technology that goes beyond just electrification. Its systems are finely tuned to create a streamlined, enjoyable driving experience, even integrating advanced lighting solutions. The inclusion of high-performance LED headlights is one of the defining features, enhancing visibility and safety for night driving. However, with complex systems, occasional issues such as dipped beam malfunctions can arise.
In this blog, we’ll explore what causes these dipped beam malfunctions and how Mercedes-Benz approaches lighting technology to enhance reliability and performance.
LED High-Performance Headlights in Mercedes-Benz EVs
High-performance LED headlights are now a standard feature in Mercedes-Benz electric vehicles, including the EQA H243. Unlike traditional halogen or even standard LED bulbs, these high-performance LEDs are specifically engineered to produce brighter, more focused beams, which makes nighttime and low-light driving safer and clearer. LED technology also has the added advantage of energy efficiency. Which is a crucial benefit for EVs, where energy conservation directly impacts vehicle range.
These headlights adapt to driving conditions, adjusting brightness based on speed, surroundings, and visibility requirements. They are also more durable and last longer than conventional bulbs, which aligns with the EV goal of reduced maintenance and longer part life.
However, as advanced as these systems are, they are not immune to occasional malfunctions. A dipped beam malfunction, for instance, may indicate issues with the alignment or functionality of these headlights, which can affect their performance on the road.
Where LED High-Performance Headlights are Used
Mercedes-Benz has implemented LED high-performance headlights across various models, particularly within its EV and newer lineups. These advanced headlights are designed for models where energy efficiency, safety, and cutting-edge technology are top priorities, such as the EQA H243. EVs like the EQA250, among others, benefit from these energy-efficient LED systems, which maximize range while offering exceptional visibility in low-light conditions.
High-performance LED headlights are also widely used in other Mercedes-Benz models, enhancing both functionality and style. Below are some of the compatible models equipped with these advanced headlights:
- A-Class W177 Hatchback (2018-2022)
- CLA C118 Coupe (2019-2022)
- E-Class W213 Facelift Saloon Sedan (2020-2022) — including E220d, E200d, E350d, E400d BlueTEC 4MATIC diesel, E300e, AMG E350e 4MATIC, E450 4MATIC, E53, and E63 AMG
- CLS C257 Coupe (2020-2023) — including CLS450 and CLS53 AMG
- EQA W243 H243 (2021-2022) — including EQA250 EV
- GLC C253 X253 Facelift (2019-2022) — including CLC300 and GLC43 AMG
- GLB X247 (2021-2023) — including GLB250 and GLB35 AMG
- GLE V167 W167 SUV Coupe (2019-2023) — covering models like GLE350, GLE400, GLE450, GLE580 4MATIC petrol gasoline, GLE350e, GLE400e PHEV Hybrid, GLE53, GLE63 AMG, GLE300d, GLE350d, GLE400d, GLE450d 4MATIC diesel, and GLE350de
- EQB X243 (2022-2023)
Each of these models relies on the high-performance LED technology to deliver clear, reliable lighting that adapts to driving conditions. However, despite their advanced design, these systems can occasionally encounter issues such as the dipped beam malfunction.
Warning Message Explained and What This Error Means
When driving a Mercedes-Benz EQA H243, you may occasionally encounter warning messages indicating issues with the LED high-performance headlights. These warnings typically relate to malfunctions in the left or right dipped beams, which are essential for safe nighttime driving. Here are some of the most common Mercedes-Benz warning messages you might see on your dashboard:
- Front Left Parking Lamp
- Left Dipped Beam
- Left Low Beam
- Check Left Low Beam
- Left Daytime Driving Lamp
These messages usually point to an issue specifically with the LED high-performance headlights in the EQA H243. The LED modules in these headlights are designed for specific sides—left and right—so a warning often indicates which side of the vehicle is affected. When these warnings appear, it typically means there is a malfunction in the corresponding LED module, which requires attention to maintain optimal lighting and safety on the road.
Why the Headlights May Fail
There are a few common reasons why the LED high-performance headlights may fail. Here’s an overview of the most likely causes:
- While LED lights generally have a longer lifespan than traditional bulbs, they can still wear out over time with regular use. Depending on usage, the lifespan may vary, and reaching the end of that lifespan can trigger a warning message.
- Physical damage, such as water ingress, accidents, or road debris impact, can also affect the headlights. Water damage, in particular, can cause the LED modules to short-circuit or malfunction, leading to a warning on the dashboard.
Symptoms of a Headlight Malfunction
When there’s an issue with the left or right dipped beam in the EQA H243, you’ll notice several clear symptoms:
- Dashboard Warning Message: The most noticeable sign is a warning on the dashboard indicating a problem with the left or right dipped beam.
- Non-Functioning Dipped Beam: The left or right dipped beam light may not be working, resulting in reduced visibility.
- Other Lights Affected: In some cases, other lights like the indicator or daytime running lights (DRL) may also stop functioning, especially if the issue is related to a wiring fault or module failure.
How to Fix the Dipped Beam Malfunction
If your Mercedes-Benz EQA H243 is displaying a warning about a dipped beam malfunction, the solution often involves replacing the LED headlamp module for the affected side. While issues with fuses may occasionally be the cause, in most cases, the problem lies within the LED module itself. Replacing the faulty module with a new one is a straightforward solution that can restore the headlight to full functionality.
For your convenience, Xenons4U offers direct replacements for both the left and right LED headlamp modules:
- Right Side LED Module: A2139002834 LED Module
- Left Side LED Module: A2139002734 LED Module
Simply identify the side that needs replacing, purchase the corresponding module, and follow these steps to install it:
- Unscrew the old LED module from the headlamp housing.
- Install the New Module in place, secure it with screws, and ensure it’s firmly attached.
- Once the module is in place, reconnect any wiring and test the headlights to ensure they’re working correctly.
Compatible Part Numbers for Replacement Modules
When replacing LED modules, it’s important to ensure compatibility. Below is a list of the software, hardware, and additional part numbers that may be relevant for your Mercedes-Benz model:
| Software and Hardware Part Numbers | Additional Compatible Part Numbers |
|---|---|
| HW-NR A2139016714 | A2139001333 |
| SW-NR A2139020024 | A2139005832 |
| SW-NR A2139016614 | A2139002434HW-NR A2139016314 SW-NR A2139020024 |
| HW-NR A2139020024 | A2139001924 |
| Mercedes-Benz Part Numbers | A2139007933 HW-NR A2139015314 SW-NR A2139025123 |
| A213 900 28 34 | A2139003233 HW-NR A2139013714 SW-NR A2139027022 |
| MA2139002834 | A213 900 28 34 MA2139002834 A2139002834 A213900283464 |
| A2139002834 | HW-NR A2139016714 |
| A213900283464 | SW-NR A2139020024 |
| A213 900 27 34 | A2C76027307 |
| A2139002734 | A2C7637700800 |
| A213900273464 | A2139001233 |
| MA213900273464 | A2139005732 HW-NR A2139016811 SW-NR A2139026922 |
| Continental Part Numbers | A2139001824 |
| A2C7637700800 | A2139007833 HW-NR A2139015214 SW-NR A2139025123 |
| A2C7637740800 | A2139002334 HW-NR A2139016214 SW-NR A2139020024 |
| A2C77762004 | |
| A2139003133 HW-NR A2139013614 SW-NR A2139027022 | |
| A2C7637740700 A2C76027307 |
For models like the Mercedes-Benz EQB X243 the compatible headlamp part numbers are:
- A2439068900
- A2439061400
- 014530-41
For models like the Mercedes-Benz EQA X243 the compatible headlamp part numbers are:
- A2439060300
- 014530-03
- A2439069200
- 015779-04
- A2439069100
- 015779-03
Compatible CLA C118 W118 High Performance LED headlamps
- A1189060801
Compatible GLB X247 LED headlamps
- A2479062205
Compatible GLE W167 LED headlamps
- A1679064508
Compatible GLA H247 LED headlamps
- A2479063805 KZ
Compatible E class W213 S213 Facelift Multibeam LED headlamps
- A2139066810
Compatible GLC C253 X253 W253 Facelift LED High Performance LED headlamps
- A2539060604
These parts are available through Xenons4U, where you can easily find a replacement and confirm compatibility with your vehicle.
Coding and Diagnostic Work Required
It’s important to note that new LED modules may require additional diagnostic work, including coding, to integrate properly with your vehicle’s onboard systems. This step ensures the new module functions seamlessly with your existing setup, preventing further errors and ensuring optimal performance.
Visit our website for all compatible LED modules and part numbers to get the exact fit for your vehicle. Rest assured that with the right module and professional installation, your Mercedes-Benz headlights will be restored to their high-performance standard.
