2015 Mercedes-Benz GLA 250 electrical system problems
11 owner complaints filed with NHTSA name the electrical system on the 2015 Mercedes-Benz GLA 250 — 12% of all complaints for this model year.
What owners report
“The contact owns a 2015 Mercedes-Benz GLA250. The contact stated while driving at an undisclosed speed, the vehicle sputtered, and the check engine warning light illuminated. In addition, the collision assists warning light illuminated. The vehicle was taken to an independent mechanic where it was…”
filed Feb 5, 2024
“Mercedes no longer supports the sos ( tel-aid) system, so this system no longer works...each time you start the car, the sos inoperative warning light is on, and it blocks other safety features ( speedometer etc..). You have to reset the light each time you get in the car. Without the support of…”
filed Jan 9, 2023
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the instrument cluster. In addition, the following two…
LI82.85-P-080507 · Service Bulletin/Repair Instructions · issued May 26, 2026Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market vehicles. Cause Before deactivating the…
LI82.85-P-080559 · Service Bulletin/Repair Instructions · issued May 26, 2026Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a…
LI82.60-P-080383 · Service Bulletin/Repair Instructions · issued Apr 2, 2026Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning…
LI54.10-P-073164 · Service Bulletin/Repair Instructions · issued Mar 4, 2026
Electrical System problems in other GLA 250 years
| Year | Reports | Share |
|---|---|---|
| 2019 GLA 250 | 2 | 7% |
| 2018 GLA 250 | 9 | 19% |
| 2017 GLA 250 | 10 | 34% |
| 2016 GLA 250 | 5 | 10% |
Other reported problem areas on the 2015 Mercedes-Benz GLA 250
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.