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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53676
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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My key wont lock or the doors JA: Sometimes things that you

Customer Question

my key wont lock or the doors
JA: Sometimes things that you think will be really complicated end up being easy to fix with Mercedes. The Mercedes Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.
Customer: when I try and press the lock button nothing happens. the doors don't lock
JA: Are you hoping to fix this yourself?
Customer: If I can or have it fixed at a dealership
JA: Is there anything else important you think the Mercedes Mechanic should know about your Mercedes?
Customer: no
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 11 months ago.
Category: Mercedes
Expert:  Marty replied 11 months ago.

Hi, I need to know the year and model of your Mercedes in order to help you.

Customer: replied 11 months ago.
2005 C 240
Expert:  Marty replied 11 months ago.

Ok, do the doors lock when using the button on the dash?

Customer: replied 11 months ago.
Hello... Yes they do
Expert:  Marty replied 11 months ago.

Ok, then the fault will usually be the remote control or the antenna for the remote. Have you replaced the batteries in the remote?

Customer: replied 11 months ago.
No I haven't... Both keys are not working
Expert:  Marty replied 11 months ago.

If both key worked previously I suspect you have a fault with the antenna for the remote. You can check the fuse for the antenna located in the trunk fuse box. Fuse #8 is for the antenna.

Customer: replied 11 months ago.
Ok what do I do when I locate the fuse
Expert:  Marty replied 11 months ago.

You need to check to see if it is blown or just try a new one.

Expert:  Marty replied 10 months ago.

Hi, I'm just following up with you on the Mercedes. Did you get this repaired?