Long-Term Mercedes-Benz C300: Keyless-Go to Keyless No at 6700 Miles - Cars.com News

, where the Keyless-Go key fob with keyless proximity entry and push-button start threw in the towel at 6,700 miles. Unlocking and starting the C300 without a functioning fob requires pulling the manual key from the fob, twisting a small, easy-to-lose cap off the door's lock and then using the manual key like a traditional twist-and-turn key. If this happens to you, hopefully you're not in front of a banquet hall full of industry colleagues like us, because you get an earful of car alarm once the door is unlocked manually. the alarm turns off once the car is started. To do that without the functioning push-button start, the ignition start button needs to be removed by pulling outward. the key fob fits into the slot behind the start button to start the car. Source: www.cars.com