1992 Mercedes-Benz 300D Service and Repair Manual

This factory service and repair manual for the 1992 Mercedes-Benz 300D pairs a four-door sedan body with a 2.5L turbocharged inline-five, a SOHC diesel. The listing gives the trim as 2.5, and it is the only one for the year. Turbocharging on a diesel of this displacement adds its own service steps to the usual engine work.

Engines covered

• 2.5L inline-five — SOHC, turbocharged, diesel

Body styles covered

• 4-door sedan

Trims covered

• 2.5

Known issues on the 1992 300D. NHTSA filed one recall against certain 1992 W124-chassis models, the wider line this sedan belongs to: the metal footrest on the front passenger side could rub through the wiring harness beneath it over time, shorting it and risking overheated wires, an engine stall or an unintended airbag deployment. Dealers added cable ties and edge protection. Two complaints name the 1992 300D, covering engine cooling, visibility and speed control, and one about seats names the 1992 W124-chassis models. Wiring diagrams, procedures and diagnostics for the harness, cooling and speed control are covered.