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Electrical systemPart report

2020 Mercedes-Benz GLE 450 Electrical system Problems

Complaints
14about this part
Share
54%of 26 total for the year
Median mileage
4,950miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 14 complaints about the electrical system of the 2020 Mercedes-Benz GLE 450, 54% of the 26 complaints for this model year. Where a mileage was given, the median is 4,950 miles. 4 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.

“Driving down the highway at 70 MPH and '48v battery malfunction' warning goes off, along with a yellow check engine light. A few seconds later a 'coolant' error message pops up and a red check engine light comes on. Car looses power completely and I'm unable to accelerate at all. Call flashes a message of 'pull over and turn the engine off'. Fortunately no one was behind me and I was able to coast safely to the side of the highway before the car stalled completely. …”

NHTSA complaint #11352040, filed 2020-08, 4,900 miles

“Warning light coolant too hot shut engine off comes on repeatedly and this is unable to be fixed. Light comes on while vehicle is in motion. Was told by mercedes this was a faulty warning light. Yesterday this came on and my engine shut itself off while the vehicle was in motion on a busy street. I was almost hit by another vehicle as I lost power to the car on a main road. I barely rolled into a parking lot. Could have been a horrible (fatal) disaster had I been on the freeway. …”

NHTSA complaint #11365446, filed 2020-10, 6,600 miles

“Command control unit is faulty affecting navigation, voice control, bluetooth, and vehicle apps. Issue was present at the time of purchase and service technicians have been working on the issues for over a month. Issues are present when both stationary and driving. May affect other electrical and driving systems.”

NHTSA complaint #11233002, filed 2019-07, 20 miles

“Sudden acceleration - electrical system failures- 1) 03/21/20 complete electrical failure - all warning lights, exterior lights & brake lights stuck on, then would not start after local shopping trip-odometer 754 miles - vehicle towed to dealer - 'reprogrammed'. 2) 06/18/20 active speed control-cruise control (which reads speed limit signs and adjusts speed) was set at 50 MPH - suddenly began to accelerate to 80 MPH. Odometer 1641 miles. 3) active speed limit control often reads frontage road speed limit signs while on main highway, initiating braking. …”

NHTSA complaint #11360596, filed 2020-09, 2,512 miles

“My vehicle was in for a normal service to have the spark plugs replaced. However I was told that the engine wiring harness had become brittle (apparently a common and reoccurring problem with my vehicle) and would likely cause misfiring after changing spark plugs. This did indeed happen and if I didn’t elect to have the harness replaced, it would have put myself and my son in danger. It was a very costly repair (over $4000) for something that the vehicle manufacturer is at fault for.”

NHTSA complaint #11732609, filed 2026-04

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2024220%
2023114%
2022321%
2021960%
20201454%
2016832%

Other parts of the 2020 Mercedes-Benz GLE 450

Engine
9 complaintsVehicle speed control
7 complaintsOther or unknown
4 complaintsBack-over prevention (rear camera)
2 complaintsSeats
2 complaintsAir bags
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSeat belts
1 complaintsSuspension
1 complaints

← All problems reported for the 2020 Mercedes-Benz GLE 450

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