2021 Mercedes-Benz CLA250 Service and Repair Manual

This factory service and repair manual for the 2021 Mercedes-Benz CLA250 covers a two-trim sedan, Base or 4Matic, with a four-door body and a single engine listing. That engine is a gasoline 2.0L inline-four, turbocharged and built with double overhead camshafts. The specifications, torque values and wiring diagrams in this manual cover the engine, drivetrain, chassis and electrical systems, with diagnostics for tracking down faults.

Engines covered

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

Body styles covered

• 4-door sedan

Trims covered

• Base
• 4Matic

Known issues on the 2021 CLA250. Five recalls apply to this year. One addressed certain cars in which the right-side ISOFIX bracket on the rear seat may lack its anchoring bar, so a child seat cannot be latched properly there. Another concerns certain vehicles whose MBUX multimedia software can leave the screen black or restart it, taking the rearview camera image with it. The driver's door lock micro-switch can also corrode on certain cars and miss an open door, letting Auto-Park fail so the car could roll. Six complaints are logged, two of them about vehicle speed control, with one reporting a crash and one an injury. Camera, door lock and seat anchorage procedures are covered.