Want this question answered?
Every 5,000 miles.
To reset the service indicator on 2003 Mercedes C230, turn on the ignition and scroll through the buttons on the steering wheel. Click on the next service due menu. Hold the adjustment knob on the left side of the cluster down, and hold for 5 seconds.
The EPA range estimate for the 2003 Mercedes-Benz C-Class is 311.6 mi. in the city, 459.2 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz G-Class is 279.4 mi. in the city, 330.2 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz M-Class is 316.4 mi. in the city, 384.2 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz SL-Class is 295.4 mi. in the city, 422.0 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz S-Class is 349.5 mi. in the city, 512.6 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz E-Class is 350.2 mi. in the city, 494.4 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz CL-Class is 326.2 mi. in the city, 466.0 mi. on the highway.
The EPA range estimate for the 2003 Mercedes-Benz SLK-Class is 270.3 mi. in the city, 397.5 mi. on the highway.
299.95 plus any additional service required on the car (as quoted from the service dept on July 9 2008)
depends in a Mercedes you supposed to run a full syntheic which if you get a good brand (Synpower, Mobil 1) you get around 10000 miles of protection