2018 Mercedes-Benz GLA 250 electrical system problems
10 owner complaints filed with NHTSA name the electrical system on the 2018 Mercedes-Benz GLA 250 — 21% of all complaints for this model year.
What owners report
“After the vehicle's main battery fully discharged and the vehicle was jump-started, multiple SRS / driver airbag warnings appeared immediately, the horn and steering wheel controls stopped working, and a clicking noise developed in the steering column when turning the wheel. None of these symptoms…”
filed Sep 14, 2026
“The vehicle experienced a sudden, total communication network crash on [XXX] the vehicle simultaneously triggered cascading critical safety system faults including “ inoperable” messages for the SOS system, Supplemental Restraint System ( SRS) and antilock brake system(ABS) along with check engine…”
filed May 30, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search 3.IP Radio 4.Send2Car 5.Speech Detection…
LI82.85-P-079087 · Service Bulletin/Repair Instructions · issued Aug 6, 2026Complaint 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, 2026
Electrical System problems in other GLA 250 years
| Year | Reports | Share |
|---|---|---|
| 2019 GLA 250 | 2 | 7% |
| 2017 GLA 250 | 10 | 34% |
| 2016 GLA 250 | 5 | 10% |
| 2015 GLA 250 | 11 | 12% |
Other reported problem areas on the 2018 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.