2005 Mercedes SL-Class Owner's Manual - Page 332
2005 Mercedes SL-Class Manual
Page 332 highlights
Practical hints What to do if ... Problem Possible cause The red DTR indicator lamp comes on while driving and you hear a warning sound. You are gaining too rapidly on the vehicle ahead of you. The distance warning system has recognized a stationary obstacle on your probable line of travel. The Distronic* distance sensor has recognized a vehicle in front of you. The fuel level has dropped below the reserve mark. The fuel cap is not closed tightly. Refuel at the next gas station ( page 267). Check the fuel cap ( page 267). Suggested solution Apply the brakes immediately. Carefully observe the traffic situation. You may need to brake or maneuver to avoid hitting an obstacle. E E A The white DTR indicator lamp comes on while driving. The yellow fuel tank reserve warning lamp lights while driving. 330