2021 Mercedes-Benz Glc300 Electrical System Problems
NHTSA lists 17 Electrical System complaints for the 2021 Mercedes-Benz GLC300, 26% of the model year's 66 total complaints. Median mileage at failure is 66,850. Multiple related recalls exist, including headlight sealing and multimedia software campaigns.
- Electrical System complaints
- 17
- 26% of 66
- Crashes reported
- 0
- Fires reported
- 0
- Injuries reported
- 0
- Median mileage
- 66,850 mi
- Related recalls
- 4
Typical electrical symptoms owners report
- Headlight housings fill with condensation, causing the affected side to dim, flicker, and eventually stop working entirely.
- Owners report the failure often starts on the passenger side and later spreads to the driver side headlight.
- Several owners with the described headlight moisture problem say dealers told them their VIN was not covered under the existing recall.
- The Mercedes app has shown low battery alerts that the dealer instructed owners to disregard rather than repair.
- One complaint describes a delayed remedy for a back-over prevention recall tied to the electrical system, with the needed part unavailable.
When 2021 Mercedes-Benz Glc300 electrical complaints were filed
First complaint Nov 29, 2021, latest Sep 11, 2026.
Electrical System recalls for the 2021 Mercedes-Benz Glc300
- NHTSA 24V070000Feb 2, 2024Electrical System15,502 vehicles
Exterior lighting:headlights
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2022 GLC 300, 2020 GLC 350e, and 2020-2022 AMG GLC 43 vehicles. The headlights may be incorrectly adjusted too high and create a glare for oncoming traffic. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Incorrectly aimed headlights can reduce the visibility of oncoming traffic, increasing the risk of a crash.
Remedy: Dealers will inspect the headlight adjustment and correct it if necessary, free of charge. Owner notification letters were mailed February 23, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.
- NHTSA 22V365000May 20, 2022Electrical System242,722 vehiclesOver-the-air fix
Electrical system:software
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
Risk: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.
- NHTSA 22V261000Apr 15, 2022Electrical System129 vehicles
Exterior lighting:headlights
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLC 300, GLC 300 4Matic, AMG GLC 63 4Matic, AMG GLC 63 S 4Matic, and AMG GLC 43 4Matic vehicles. The electrical connection for the headlights may not be watertight, which can result in headlight failure.
Risk: Headlight failure can decrease visibility for both the driver and surrounding traffic, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the headlight sealing plugs, as necessary, free of charge. Owner notification letters were mailed June 3, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022050005.
- NHTSA 21V354000May 14, 2021Electrical System343,191 vehiclesOver-the-air fix
Electrical system:software
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLA-Class, GLE/GLS-Class, A-Class, E-Class, E-Class Coupe and Convertible, GLA/GLB-Class, GLC-Class, CLS-Class, and AMG GT-Class 4-door Coupe vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The MBUX multimedia system software may cause the display to remain black, or reboot after startup. This could result in the rearview camera image not displaying properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Risk: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Remedy: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning June 28, 2021. Owners may contact MBUSA customer service at 1-800-367-6373. MBUSA's number for this recall is 2021050012.
Electrical System complaints by Glc300 model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are electrical problems in the 2021 Mercedes-Benz GLC300?
- NHTSA lists 17 Electrical System complaints for the 2021 GLC300, which is 26% of all 66 complaints filed for that model year.
- Is there a recall for the 2021 GLC300 headlight issue?
- Yes. Recall 22V261000 covers 2021 GLC 300 and related models for headlight electrical connections that may not be watertight, and dealers replace the headlight sealing plugs free of charge.
- At what mileage do 2021 GLC300 electrical failures typically occur?
- The median mileage at failure for Electrical System complaints on the 2021 GLC300 is 66,850 miles.
- Have the headlight condensation complaints caused crashes or fires?
- No. NHTSA data shows 0 crashes and 0 fires linked to the reported Electrical System complaints for the 2021 GLC300.
- Are all 2021 GLC300 headlight condensation issues covered by the recall?
- Not according to owner reports. Several owners state their VIN was excluded from the existing recall despite describing the same headlight moisture problem.