Mercedes GLA W156 DRL LED Control Module — A2189009303 / A1668203589 Replacement
OEM Replacement | SCN Coding Required | 2-Year Warranty
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Description
OEM DRL LED Control Module — Mercedes GLA W156 Replacement
This is the direct OEM replacement for the A2189009303 / A1668203589 DRL (Daytime Running Light) LED control module. It is specifically designed for the Mercedes-Benz GLA-Class (W156 / X156) from 2013 to 2017 equipped with factory Xenon headlights.
It restores reliable operation to your factory DRL and turn signal indicator system. If your Daytime Running Lights fail to turn on, flicker, or your front indicator has stopped working, this control module is the most common cause.
CRITICAL FITMENT WARNING: This module is for the GLA W156 only.
While this module shares the exact same part number (A2189009303) and physical appearance as the module used in the A-Class (W176) and CLA (C117), they are internally different and not interchangeable. Installing an A-Class module into a GLA will result in partial or failed DRL function. Please ensure you are ordering for the GLA W156.
SCN Coding Required: Please note that this module is not plug-and-play. After installation, the module must be programmed. This can be done by a Mercedes dealer or an independent mechanic or auto electrician with a Scan Tool.
1 x Module unit. Fits either Left or Right side.
Key Features
- Direct OEM replacement for the Mercedes GLA W156 DRL LED control module
- Restores full Daytime Running Light and turn signal indicator function
- Direct physical replacement — matches original OEM connector and mounting exactly
- Important: SCN coding is required after installation
- 2-year extended Australian warranty included
OEM Cross-Reference Part Numbers
- Mercedes OEM: A2189009303, A 218 900 93 03, A1668203589, A 166 820 35 89
- Supplier / Lear OEM: LAM-S3, 524744F04, E101877B, 031C-9303
Vehicle Compatibility
Fits the following models equipped with factory Xenon headlights (Pre-Facelift):
- Mercedes-Benz GLA-Class (W156 / X156): 2013–2017
- Models: GLA180, GLA200, GLA250, GLA45 AMG, GLA180 CDI, GLA200 CDI, GLA220 CDI
Not sure if your vehicle is listed? Email a photo of your original module label to [email protected] and we will confirm fitment for you.
About Pro Vision Lighting™
Pro Vision Lighting™ has over 20 years of experience supplying OEM replacement automotive lighting to Australian motorists, workshops, and auto electricians. Fast Express Delivery, 2-year extended warranty, and expert support by phone or email.
Overview
- PRODUCT TYPE: OEM DRL LED Control Module.
- APPLICATION: OEM replacement for the A2189009303 / A1668203589 module as fitted to the Mercedes GLA W156 (2013–2017).
- WARNING: This module is for the GLA W156 only. It is not interchangeable with the A-Class W176 despite having the same part number.
- COMPATIBILITY: SCN coding is required after installation using the 11-digit code inside the headlamp housing.
- SUPPLIED AS: 1 x Module unit. Fits Left or Right side.
- DELIVERY COSTS: Express delivery included — 1–3 business days Australia-wide.
- WARRANTY: 2-Year Extended Warranty. Money-back guarantee.
Frequently Asked Questions
Frequently Asked Questions
What vehicles does this module fit?
This specific module fits the Mercedes-Benz GLA-Class (W156 / X156) from 2013 to 2017 equipped with factory Xenon headlights.
I have an A-Class W176. Can I use this module?
No. Even though the A-Class W176 uses a module with the exact same part number (A2189009303) and physical appearance, the internal electronics are different. Installing this GLA module into an A-Class will result in partial or failed DRL function. You must order the specific W176 variant.
How do I know if my DRL module has failed?
The DRL failing to turn on, flickering, or the front turn signal indicator stopping working are the most common symptoms. Water ingress into the headlight housing is the leading cause of failure.
Do I need to program or code this module after installation?
Yes. SCN coding is required. The module must be programmed using the unique 11-digit code printed on a sticker inside your headlamp housing. Without this coding, the DRL will not function correctly. This coding can be performed by a Mercedes dealership or an independent specialist with Xentry diagnostic equipment.
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