Why is my Mercedes-Benz not starting?

Battery. The most obvious reason is that the battery might already be too old. If you have a relatively new battery, though, but the engine won’t start, trickle charge your battery by using a 12-volt trickle charger. …

Why won’t my Mercedes key turn in the ignition?

If the key does not turn in the ignition, try moving the steering wheel as you try to turn the key. Push the steering wheel in the direction that allows a little movement and then insert the key and try to turn the key again. You can put pressure on the steering wheel and also try shaking the steering wheel.

What causes a no crank no start?

If the fuel pump is not working correctly, the engine won’t be able to run, and it will shut off. If the fuel pump, fuel injector, or fuel filter is damaged, this can cause the no crank/no start condition. You also should check the fuel filter, as that could be the main problem.

How do I get my Mercedes out of theft mode?

Method 1: Check your key and cylinder

1. Step 1: Check your key fob battery.
2. Step 2: Check your door lock cylinder.
3. Step 3: Check that you are using the proper key to start your car.
4. Step 1: Check for the anti-theft light.
5. Step 2: Turn the ignition to the “on” position.
6. Step 3: Check the anti-theft light again.

What do I do if my Mercedes key doesn’t work?

Quickly remove key from ignition and within 10 seconds hold down the lock button. Continue holding the lock button, and at the same time press, the unlock button five times. Next release all buttons and press the gate/trunk button one time. Your Mercedes remote should be synchronized.

What does it mean when key won’t turn in ignition?

Common reasons the ignition key won’t turn include attempting to use a key for a different vehicle, or a locked steering wheel. You can unlock the steering wheel by turning the steering wheel from side to side while simultaneously turning the ignition key on.

How do I know if ignition switch is bad?

Keep reading to see all of the common signs of a faulty ignition switch.

1. Car Won’t Start. If you turn your key and the car attempts to start, but fails, then you might have a broken ignition switch.
2. Key Won’t Turn.
3. Car Stalls.
4. No Noise From The Starter.
5. Dashboard Lights Flicker.

What happens when your ignition switch goes bad?

If the ignition switch fails while the engine is operating it may cut off power to the ignition and fuel systems, which will cause the engine to stall. Depending on the exact issue, the vehicle may or may not be able to be restarted a short while later.