2015 Mercedes-Benz GLA 250 Electrical system Problems
- Complaints
- 11about this part
- Share
- 12%of 94 total for the year
- Median mileage
- 18,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the electrical system of the 2015 Mercedes-Benz GLA 250, 12% of the 94 complaints for this model year. Where a mileage was given, the median is 18,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Check engine appeared on our dash board at 56,000 mileage and diagnosed with a problem of the auxillary electrical oil pump. This is the second time we have check engine after we are off warranty. I can also smell gas inside the cabin when I turned on the engine”
NHTSA complaint #11258021, filed 2019-09, 56,000 miles“I started the car and I got a message stating the right front air bag malfunctioned. There is a short. I took the car in for repair, there have been several recalls on this model for the air bag, mine is not included. The air bag has shorted out. This is a huge safety issue.”
NHTSA complaint #11162549, filed 2018-12, 34,520 miles“We have had this car about a year, we encounter numerous occasion the the collision assist plus has engaged intermittently w/o any reasonable obstacle in front of the car when it is in motion. About a month ago, the car gave message collision assist inoperative and I can even get the car in gear not with multiple restart. Last week I went out with my wife and the car stop on the busy street on the stop and go traffic and the car did auto start stop was unable to restart and it disengage the transmission and I had to restart the car manually and reengage the transmission. …”
NHTSA complaint #11190094, filed 2019-03, 9,700 miles“Vehicle on side street near home...suddenly chugs, and slows to a crawl will not accelerate...all lights come on dashboard..also engine light... Towed to dealership in daytona beach, fl...after 3 wks service dept called to say it was fixed... Wiring harness and a me control unit replaced. 3 wks later on 5/10/16 same incident happened...luckily it was on side street so was no accident or damage....this appears to be a recurring problem w/mercedes benz vehicles.... Service dept claims found fix online..? Reset some kind of pins .....this car is not safe in my opinion....”
NHTSA complaint #10870565, filed 2016-05, 9,000 miles“When vehicle is parked in a space under power lines the vehicle locking system deactivates and the vehicle will not lock. The vehicle must be moved to a space where there no power lines above the vehicle.”
NHTSA complaint #11098340, filed 2018-05, 10,500 milesRelated service bulletins
- 11036190Aug 6, 2026Complaint 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…
- 11033185May 26, 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…
- 11033016May 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…
- 11031218Apr 2, 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…
- 11029927Mar 4, 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…
- 11026835Dec 18, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
- 11018712May 30, 2025Complaint MBUX head unit display with red text box "System Inoperative". ONLY for vehicles with SA code (549+21U) or (549+U19). Cause Head unit software variant. Remedy For all…
- 11018626May 22, 2025Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the…
- 11017119Apr 21, 2025Complaint 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…
- 11015640Mar 5, 2025Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
Electrical system: other model years
Other parts of the 2015 Mercedes-Benz GLA 250
27 complaintsOther or unknown
16 complaintsTransmission and drivetrain
14 complaintsAir bags
12 complaintsFuel system
12 complaintsBody and structure
12 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsBrakes
5 complaintsForward collision avoidance
4 complaintsElectronic stability control
3 complaintsSteering
3 complaintsSuspension
3 complaints
← All problems reported for the 2015 Mercedes-Benz GLA 250
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology