2019 Mercedes-Benz GLC 300 electrical system problems

14 owner complaints filed with NHTSA name the electrical system on the 2019 Mercedes-Benz GLC 300 — 30% of all complaints for this model year.

Electrical System complaints

30%

share of all complaints

—

median reported incident mileage

0 / 2

crash / fire reports

What owners report

“On April 16, 2026, within minutes of being released from a certified dealership, my 2019 Mercedes-Benz GLC 300 suffered a sudden and total loss of propulsion while traveling at high speed on the Belt Parkway (NY). Despite depressing the accelerator, the vehicle failed to maintain speed and stalled…”
filed May 7, 2026
“FIRE! NHTSA Vehicle Safety Complaint – Mercedes-Benz GLC300 Complainant Information: [XXX] [XXX] Phone: [XXX] Email: [XXX] Vehicle Information: 2019 Mercedes-Benz GLC300 4MATIC VIN: [XXX] Purchase Location: Missouri Incident Location: St. Louis, MO Date of Incident: [XXX] Date of Report Submission…”
filed Jul 12, 2025

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Complaint 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. Cameras 6. Other Park Topics. Cause…
LI54.65-P-080132 · Service Bulletin/Repair Instructions · issued Aug 12, 2026
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, 2026