The fuse is in the passenger compartment fuse box. You need to search on the old posts for the location details. 2.-. The other is a connector in the driver's side rear wheel well, where if you diconnect the harness with the ignition off, and you wait a couple of seconds, then the fuel gauge mechanism will be reset. To unlock the security -. Procedure 1: (1) Unlock the car, (2) Turn the key all the way without starting the car (3) Let the mirrors open up and everything to reset (~ 10 seconds) -- Should do this every time! (4) Start the car. Procedure 2: If above doesn't work, here's a keyless entry option on the key: The 2008 Mercedes-Benz C300 has 28 NHTSA complaints for the engine at 99,444 miles average. that the electronic ignition switch needed to be replaced. the key and only a mb dealership can It could also be the EIS (electronic ignition switch), but then I'd suspect other things wouldn't be working properly. A common cause of electrical gremlins is low voltage. Check the battery before starting - it should be around 12.5v. During start it shouldn't drop below 11v, and after start, it should be around 14v. Common problem with intermittent functionality of older/original EIS with Motorola Microprocessor HC08 (Maskset 4J74Y) failure, resulting in key recognition problem. List of Mercedes or Sprinter vehicles covered in this Mercedes Benz 2000-2013 EIS Ignition Switch Cloning Service. A-Class W169 B-Class W245 C-Class W202 W203 W204 16Iqmw. Common Mercedes EIS/EZS Ignition Switch Problems: Key won't turn when inserted into the ignition. Key won't turn in the ignition during cold weather. Key turns in the ignition but the car won't start. Intermittent key faults and non start. Key turns the ignition but dashboard doesn't turn on. Unable to unlock the Steering Lock Fairly expensive gamble, but it's a hassle when it happens at a most in opportune time. C-Class (W204) - 2011 C300 Towed to Dealer: Ignition Switch - Hey all, I wanted to put this post together for everyone because this seems to be a common issue with Mecedes-Benz. In short, I believe that the ignition switch is bad. DrX. Sometimes the cable between the gearshift and the ignition key breaks - it normally prevents you from removing the key unless it's in Park. If it's a bit sticky you can try shifting back into Neutral then firmly shifting into P. (You may need to stick a small stick/pen into the flap behind the gear shift to release it from P. The ignition switch on your Mercedes is coded to the vehicle, so you will have to reprogram the system for the computer to recognize it. The switch itself is easy to remove but you must first remove the steering wheel, steering column tube module and the trim around the gauge cluster. - English Wiring Diagrams and Electrical Components Locator for vehicles Mercedes C300 (2008-2014).

mercedes c300 ignition switch problems