Why is my Mercedes key not starting my car?

Key Problems: If your Mercedes’ key fob has a dead (or dying) battery, it may not communicate properly with the Electrical Ignition System (EIS). secondary electrical systems but not enough juice to turn the car’s starter motor. In this event, all you’ll need to do is replace the battery.

Why my car key is not working?

The most obvious reason for why a key stops working can be due to a physical issue such as a worn or bent key. However, with a modern key fob, mechanical issues may be the problem. Keep in mind, they are small electronic gadgets. A dead battery might even cause a key’s electronic code to be reset.

Why is my car key not working on my Mercedes?

It could be the car battery. If the car battery is dead, the key’s remote won’t be able to communicate wirelessly with the car at all. And to avoid the risk of damaging the electronics on your Mercedes, have the battery tested by a professional. You can unlock your car, but the key won’t turn or start the engine.

Why does my car ignition key not work?

A quick guide to problems and solutions to why the ignition key won’t start the car. Possible reasons and solutions. There may be a few reasons why the ignition won’t start the car. Some of them are mechanical (such as a dead battery) and some of them are transponder key-related issues.

Why is my car key fob not working?

You go to start your car one day, but you get no response from your vehicle. Your first thought might be a dead car battery, which can sometimes cause the key fob to stop working. Before you call the tow truck, however, it’s important to consider other reasons why your key fob might not be working.

How do you unlock the Mercedes C class key fob?

Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button. In 1-2 seconds, press the remote’s lock button five times in a row while holding the unlock button. Figure 4. Re-sync the SmartKey.

Why is my Mercedes C class key not working?

The main symptoms are the key won’t unlock the doors or start the car. You may see a blinking red light when you press a button. Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button.

What kind of car won’t start when you turn the key?

The same has happen to my car 2008 C350. 3 Month ago the car won’t start I got it towed to the mechanic once it got off the tow truck it started. Later to this month it wont start and doing the same. I turn the key but noting.

Insert the key and turn it to the “ON” position, then press and release the lock button on the key. Press and hold the remote’s unlock button. In 1-2 seconds, press the remote’s lock button five times in a row while holding the unlock button. Figure 4. Re-sync the SmartKey.

What to do if your smart key is not working?

If your SmartKey isn’t working, you might need to re-sync it. The main symptoms are the key won’t unlock the doors or start the car. You may see a blinking red light when you press a button. Insert the key and turn it to the “ON” position, then press and release the lock button on the key.