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In case you lose your Mercedes key or break it, we can replace it for you. Tonys locksmith provides a highly efficient, cost-effective Mercedes key replacement service.

Do you need key assistance for your Mercedes? In a lost key situation, there is no need to get the vehicle towed to the dealer, as we can come out to you by the roadside, saving time and money!  Even in non-emergency situations where you may just need a spare key, you will find our mobile service very convenient.

All Mercedes keys are supplied and programmed from our van.

Get in touch with our team today by calling 0779 861 2837 to find out more about the Mercedes car key services that we offer.


How much do you know about Mercedes Keys?

From the mid-1990s, Mercedes keys integrated the immobilizer function and the flip-out remote key. This way, only a key programmed to a specific vehicle can start the engine. Mercedes has an electronic unit that holds the data of keys programmed.

Drivers will think of their closest dealership as their first option when in need of Mercedes key replacement. To have a new Mercedes key from a dealer means paying for the car to be towed there. This is costly and you may need to wait for 10 days to get your key.

Tonys Locksmith can supply Mercedes keys on the same day. Our services are mobile with minimum inconvenience. It is impossible to clone or override keyless Mercedes Keys. The immobilizer chip is encrypted with a sophisticated coding system that can only be read and programmed with the latest diagnostic equipment.

How do Mercedes Keys work?

Mercedes models from the mid-1990s used the remote signal to operate central locking and disable the immobilizer system. Those keys had no transponder chip.

Mercedes keys send an infrared signal to the electronic ignition switch that upon recognizing the message, engine start.

Tonys Locksmith provides you with roadside lost or broken key replacement services suitable for all Mercedes vehicles.

What Mercedes Key services do we provide?

Lost or Broken Key Replacement

If you have lost or broken your Mercedes keys and you need a replacement, then we can provide you with a brand new set of keys while you wait. You don’t have to worry about the expense of towing your car to a dealer or having to wait ten working days.

Mercedes Spare Keys

If you have bought your car second hand, you may only have been given one car key to start the engine. If you need a Mercedes spare key, we can carry out a quick car key duplication service for you on the same day service. It’s always advised to have a spare Mercedes key, in case one of them gets broken or lost in the future.

Mercedes Key Programming

If you have a Mercedes model that was manufactured after 1995, then it is likely that your Mercedes keys will have a transponder chip. Sometimes, those key chips may stop operating and will need expert, diagnostic equipment to work again. If it is beyond repair, we can program a new Mercedes key on the spot.

Mercedes Unlocking

Locked out from your Mercedes? Have you locked your keys inside your car or in the back of your Mercedes van and need instant access?

It happens more than you think. We can provide you with a Mercedes locksmith who can unlock your car and retrieve them. They will leave your vehicle in pristine condition.

Mercedes Key Repair

We also repair chipped, cracked or worn out Mercedes keys.

Mercedes Ignition Switch Repair

Mercedes electronic ignition switches may stop working. Our technicians use the latest equipment for the testing and repair of electronic ignition switches. The cost is lower than if you went to the main dealer.

Electronic Steering Column Lock Repair

Steering column lock failure is becoming a common reason for not being able to start your Mercedes E Class, C Class Mercedes Sprinter or Vito. We specialize in Mercedes steering lock repairs and can provide you with a quick diagnostic on your Mercedes.

Electronic Ignition Switch Replacement

Unfortunately, Mercedes Sprinter ignition switches are stolen frequently.

We can offer same day Mercedes ignition switch replacement and additional protection solutions. Contact us about what your vehicle requires, and we’ll be happy to assist you.

Which Mercedes models key do we repair?


  • Mercedes-Benz A Class 2004 2012
  • Mercedes-Benz C Class 2007 2014
  • Mercedes-Benz E Class 2003 2009
  • Mercedes-Benz B Class 2005 2011
  • Mercedes-Benz S Class 1999 2005
  • Mercedes-Benz M-class 2005 2011
  • Mercedes-Benz CL Class 1999 2006
  • Mercedes-Benz SLK Class 2004 2010

This is the first Mercedes-Benz key fob that had a complete plastic housing with the emergency blade hidden within the shell. This Mercedes key is used across the range of Mercedes vehicles with a slight variation in shape.


  • Mercedes-Benz Sprinter 2006 2018
  • Mercedes-Benz Viano 2004 2019
  • Mercedes-Benz Vito 2004 2019
  • Mercedes-Benz A Class 2013 2018
  • Mercedes-Benz B Class 2011 2018
  • Mercedes-Benz C Class 2014 2019
  • Mercedes-Benz CL 2006 2013
  • Mercedes-Benz S Class 2006 2014
  • Mercedes-Benz SL 2001 2019
  • Mercedes-Benz CLK 2003 2010
  • Mercedes-Benz CLS 2004 201
  • Mercedes-Benz SLK 2011 2019
  • Mercedes-Benz E Class 2009 2016
  • Mercedes-Benz G Class 2002 2018
  • Mercedes-Benz GL 2006 2019
  • Mercedes-Benz M-class 2012 2019
  • Mercedes-Benz R Class 2006 2013

This is the chrome finish Mercedes key fob that is used with the above models. This key is the facelift version of the old black remote key and also covers the same old models – it’s also used for 2019 Mercedes.


  • Mercedes-Benz A Class 1997 2004
  • Mercedes-Benz C Class 1993 2007
  • Mercedes-Benz E Class 1993 2002
  • Mercedes-Benz M-class 1997 2005
  • Mercedes-Benz CL Class 1995 1999
  • Mercedes-Benz CLK Class 1997 2003
  • Mercedes-Benz SLK Class 1996 2004
  • Mercedes-Benz Vito 1996 2003
  • Mercedes-Benz Viano 1996 2003

Here is one of the first Mercedes-Benz flip remote key fobs used on the above models. The transponder chip is separate from the remote.

A similar key is used on C and E models W202 and W124 chassis featuring just one button on the remote. This key operates central locking and activates/ deactivates the immobilizer simultaneously.

How do I get a New Key for my Mercedes?

Are you struggling with a car key that needs repair or replacement? Then you’re in the right place. Our expert team of Mercedes key replacement specialists will be with you quickly to replace, repair or program your new car key. While dealers can also carry out this service, they often charge a very high fee, and your car will also need to be present at the dealership. You have to account for towing the vehicle to the dealer, making this an additional cost on top.

It’s not something that you have to worry about with Tonys Locksmith. As soon as you call us, we will dispatch a qualified and highly experienced Mercedes car key specialist straight to you wherever your car is.

Can a Locksmith Program a Mercedes Key?

Yes, specialist auto locksmiths can program Mercedes keys. You get a much quicker service using an auto locksmith, and save considerably on Mercedes key replacement and Mercedes key repair costs. Auto locksmiths use reverse engineering processes when creating a new Mercedes key.

Can Mercedes Benz keys be reprogrammed?

No. Mercedes keys cannot be reprogrammed once they have an immobilizer data from one vehicle. They are only programmed once.


Our team uses the latest diagnostic equipment so that your Mercedes vehicle meets high standards. Our prices are lower than branded dealerships so you do save a lot on Mercedes Key repair or lost or broken key replacement services.

We will provide you with roadside car key replacements, and offer a service suitable for all Mercedes vehicles. There are several problems that you may come across when it comes to Mercedes vehicles. Keys locked inside, breaking, steering column locks becoming faulty, key duplications or even electronic ignition switch failure all have a solution. No matter where you are, our Mercedes car key specialists can come to you anytime you are affected. You could also consider getting a set of Mercedes spare keys should you lose one.

Get in touch with a member of our team today by calling 0779 861 2837 to find out more about the Mercedes car key services that we offer.


Whether you need your Mercedes key fixed or a new set of keys made, require an additional set of keys created, or have lost your vehicle key entirely, Tony’s Locksmith is prepared with the equipment and expertise to get you back on the road quickly.

Tony’s Locksmiths is a family run business that has been helping people throughout Cardiff with their locksmith needs for 20 years. We operate in and around the city and are the leading 24-hour emergency locksmith within the area.

Get in touch with your Mercedes key programming enquiry