2025 Mercedes-Benz GLS 450 4MATIC Electrical system Problems
- Complaints
- 2about this part
- Share
- 29%of 7 total for the year
- Median mileage
- 5,265miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 2 complaints about the electrical system of the 2025 Mercedes-Benz GLS 450 4MATIC, 29% of the 7 complaints for this model year. Where a mileage was given, the median is 5,265 miles.
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.
“I am writing to file a formal complaint regarding a serious malfunction of the Automatic Emergency Braking (AEB) system. This malfunction caused my vehicle to unexpectedly perform an emergency stop without a valid cause, resulting in significant damage to its suspension system. Incident Details: •Date of Incident: Friday, December 5, 2025, between 10:45 am and 11:15 am ET •Location: Community Baptist Church of Englewood, 224 1St, Englewood, New Jersey. …”
NHTSA complaint #11703696, filed 2025-12“The contact owns a 2025 Mercedes-Benz GLS450 4Matic. The contact stated that while driving at various speeds, a safety feature with a white speed limit sign started flashing on the instrument cluster. The contact stated the flashing was a constant issue. The vehicle was taken to the local dealer several times. The contact was informed by the dealer that it was a known issue and that the manufacturer was still developing a fix. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 5,265.”
NHTSA complaint #11721777, filed 2026-03, 5,265 milesRelated service bulletins
- 11038174Sep 15, 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…
- 11038224Sep 11, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the control unit software for the front signal acquisition and…
- 11037806Sep 11, 2026Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a…
- 11037732Sep 9, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243…
- 11036511Aug 24, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket…
- 11036608Aug 22, 2026Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a…
- 11036142Aug 12, 2026Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5…
- 11035217Jul 24, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243…
- 11035016Jul 9, 2026Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a…
- 11034888Jul 8, 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…
Electrical system: other model years
Other parts of the 2025 Mercedes-Benz GLS 450 4MATIC
2 complaintsEngine
1 complaintsEngine cooling
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2025 Mercedes-Benz GLS 450 4MATIC
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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