Maintenance Service Reminder Reset - Procedure 04

NOTE: Service reminder light (if equipped) will come on at 5000 or 10, 000 mile intervals to indicate oil and filter change is scheduled. After changing oil and filter, reset mileage counter.

The Service Reminder Indicator (SRI) is triggered at the appropriate interval is reached. On US and Canadian cars, with or without turbocharger, this will be 10, 000 miles (15, 000 km), 750 operating hours or 12 calendar months.

Once triggered, the SRI comes on each time the engine is started. The light goes out after about 2 minutes. After service is performed and the SRI counter reset, the SRI will not light again until shortly before the next service is due.

Identify type of instrument cluster used in vehicle. See Fig 1.

Fig 1: Identifying VDO Instrument Cluster (1993-97 850)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Turn ignition on. Locate on-board diagnostic unit on right side of engine compartment. Connect diagnostic lead to terminal No. 7 on diagnostic unit. See Fig 2.

Fig 2: Locating On-Board Diagnostic Unit (1993-95 850)

Courtesy of VOLVO CARS OF NORTH AMERICA.

Depress button 4 times, briefly but firmly. System is now in DTM 4 mode. When LED comes on and stays on, the system is ready for entering codes.
Code to be entered is 1-5-1. Enter first digit (1) with LED on. Wait until it comes on and stays on again, then enter the second digit (5). Repeat procedure for the third digit (1).
Wait for diagnostic unit confirmation (LED flashing several times in succession). If LED emits a couple of rapid flashes and service reminder light is turned off, reset procedure is complete. If service reminder light remains on, repeat procedure.