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Electrical systemPart report

2020 Mercedes-Benz GLB 250 Electrical system Problems

Complaints
10about this part
Share
19%of 54 total for the year
Median mileage
1,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 10 complaints about the electrical system of the 2020 Mercedes-Benz GLB 250, 19% of the 54 complaints for this model year. Where a mileage was given, the median is 1,500 miles. 2 recall campaigns on record are filed under a similar system.

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.

“On 3/23/2021, my GLB 250 started experiencing electrical and engine issues after I had been stopped at a railroad crossing for 15 minutes with the engine running and the car in park. Once the train passed and I was able to drive, my instrument panel started lighting up with every possible warning light and additional warnings that said to not shift gears and go to dealer immediately. I drove approximately 1 mile and stopped at a stop light, at which time all warnings continued to go off. I could not turn the car on or off, could not shift into any gear, the steering wheel was locked. …”

NHTSA complaint #11404564, filed 2021-03, 8,000 miles

“On friday 7/17/2020 aroundnoon, I wasdriving mymb glb that was bought lessthan90 days ago when suddenly the dashboard went blank. I could not see speed, gas gages or any other safety features that would be on the dash. I was basically blinded. I called mercedes 911 after stopping the car. We tried to factory reset the computer on advice from tech via the phone. This had no impact on the screen. The mb rep did not offer roadside assist. I had to drive over 25 miles with no dashboard to gage my speed, gas or safety lights. I had no choice as no help was coming to get me. …”

NHTSA complaint #11340435, filed 2020-07, 3,250 miles

“The control module for the air conditioning that tells the air when to turn on and off isn't working. Mine went out at 1200 miles. Brand new model 2020 january. There are 120 computers on this vehicle”

NHTSA complaint #11353889, filed 2020-09, 1,200 miles

“There's a recall on the display monitor the screen will go black sometimes come back on sometimes never come back on there was a update to fix the issue if the update doesn't work they will have to change the display module or computer that controls it when I brought it to the dealer they want to charge me to replace the display or computer , I called the manufacturer and they refused to fix the recall problem”

NHTSA complaint #11512281, filed 2023-03

“My car has a recall from May 2021, I purchased my car Oct 2022. When asked about the recall the finance manger at Mercedes Benz of South San Francisco, Rapheal Chin stated it was no open recalls on the car. When I pointed out the repair order didn’t match the car fax, it was explained by the salesman that it was completed. But NHTSA says that it was not fixed. When trying to get it fixed my car sat at the dealership for 8 days with no understanding of how to fix my car. This is clear neglect on the manufacturer and is causing me grief! …”

NHTSA complaint #11506576, filed 2023-02

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2022218%
2021414%
20201019%

Other parts of the 2020 Mercedes-Benz GLB 250

Body and structure
14 complaintsOther or unknown
11 complaintsEngine
6 complaintsSuspension
6 complaintsFuel system
5 complaintsAir bags
4 complaintsSteering
4 complaintsVehicle speed control
3 complaintsBack-over prevention (rear camera)
2 complaintsBrakes
2 complaintsTransmission and drivetrain
2 complaintsEquipment
1 complaints

← All problems reported for the 2020 Mercedes-Benz GLB 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