2020 Mercedes-Benz GLC300 Service and Repair Manual

This factory service and repair manual for the 2020 Mercedes-Benz GLC300 applies to five trims, namely Base, 4Matic, Avantgarde, Off-Road and Sport, and to both the four-door sport utility and the four-door sport utility coupe. A turbocharged 2.0L inline-four with DOHC heads, fueled by gasoline, is the one engine listed. The manual's electrical coverage includes driver-assistance hardware such as the rear camera and backing sensors and the forward collision system, together with the side impact sensors wired into the restraint system.

Engines covered

• 2.0L inline-four — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sport utility
• 4-door sport utility coupe

Trims covered

• Base
• 4Matic
• Avantgarde
• Off-Road
• Sport

Known issues on the 2020 GLC300. Sixteen recalls cover the 2020 GLC300. On certain vehicles the side crash sensor connectors could work loose, so air bags and seat belts might react late in a side impact; dealers inspected and replaced sensors. A software error on certain vehicles could stop the rearview camera image appearing, contrary to the federal rear visibility rule, and certain vehicles had headlights aimed high enough to glare at oncoming drivers. Of 69 complaints, 21 involve the engine, 7 back over prevention and 6 forward collision avoidance, with 3 reporting a crash and 2 an injury. Sensor wiring diagrams, camera diagnostics and headlamp procedures are included.