How to Change the Battery in Your Mercedes-Benz Key Fob

November 12th, 2020 by

Mercedes-Benz key fob

Is your Mercedes-Benz key fob battery about to die? There’s no need to worry. Mercedes-Benz of Greenwich is here to teach you the low battery warning signs to watch out for, as well as how to change the battery in your Mercedes-Benz key fob at home. Use our handy Mercedes-Benz key fob replacement guide, and contact our Greenwich service center at Call service Phone Number(866) 285-4034 if you need any help along the way!

Schedule a Service Appointment

How to Replace the Battery on a Mercedes-Benz Key Fob: A Step-by-Step Guide

Is it time to replace the battery in your Mercedes-Benz key fob? We’ll take you through the whole process, step-by-step:

  1. Determine Key Type
    • Check if you have a Chrome Key or a SmartKey® — this will factor into changing the battery.
    • Most older Mercedes-Benz models are paired with a SmartKey®. Unlike the Chrome Key, it is cased in plastic.
    • If your Mercedes-Benz key fob is cased in metal, it’s a Chrome Key! To determine if your Chrome key is old or new, take a look at the panic button. Is it circular (old) or triangular (new)?
  2. Choose the Right Batteries
    • A SmartKey® requires two CR 2025 batteries, and the older Chrome Key does too.
    • The newer Chrome Key only requires one.
  3. SmartKey® Battery Replacement Steps
    • In order to change your SmartKey® battery:
      • Pull the latch at the end of the key holder.
      • Put your key horizontally into the open slot.
      • Take the battery compartment out.
      • Replace the existing CR 2025 batteries with two new ones.
  4. Chrome Key Battery Replacement Steps
    • In order to change your Chrome Key battery:
      • Pull on the tab at the bottom of the fob.
      • Push the key into the narrow end of the slot to remove the cover.
      • Then simply replace the battery with a new CR 2025.

If you have any questions at all when you try to change the battery in your key fob, you can always contact our service center online or give us a call at (866) 285-4034. Although it’s not especially difficult to learn how to change the battery in your Mercedes-Benz key fob, it’s even easier to have your Mercedes-Benz key battery changed at Mercedes-Benz of Greenwich.

When is Mercedes-Benz Key Battery Replacement Necessary?

There are several key warning signs that indicate a need for Mercedes-Benz key battery replacement. These include:

  • Your vehicle becomes more difficult to start. If it takes several minutes to turn on or multiple tries to start, your key fob may have a low battery.
  • You can’t lock/unlock the doors or employ the panic alarm.
  • Your dashboard shows a warning sign that shows an issue with the charging system.
  • You have to get closer to the vehicle than usual in order to use your fob.

If any of these Mercedes-Benz low battery warning signs occur, it’s a good idea to be proactive and change the battery in your Mercedes-Benz key fob to avoid any issues on your Rye drives.

Troubleshooting: What if Your New Mercedes-Benz Key Fob Battery Isn’t Working?

If you’ve learned how to change the battery in your Mercedes-Benz key fob, but things still don’t seem to be working as they should, you might need a new key. We can take a look at your key and assess its condition, and if necessary, order a replacement Mercedes-Benz key fob for you to use. Generally speaking, pricing for new key fobs starts at just under $200. Programming the key and syncing it with your vehicle will often bring the total cost closer to $350 or $400. Although the process is fairly quick and easy, we always recommend that you have your Mercedes-Benz key fob battery changed before you jump to conclusions.

Explore Mercedes-Benz Service Costs at Mercedes-Benz of Greenwich

If you need any assistance while learning how to change your Mercedes-Benz key battery, or have any other Mercedes-Benz service questions, our service center can cover your service needs for reasonable prices. Contact us with any questions you have, and be sure to check out our service specials before driving in from Stamford or New Canaan for your next appointment!


Schedule a Service Appointment with Mercedes-Benz of Greenwich


 

Mercedes-Benz Service Specials

Wheel Straightening Repair: $100 Per Wheel

Wheel Straightening Repair: $100 Per Wheel | Regularly $190.00

Present offer at time of write-up. Cannot be combined with other offers or incentives. One-time use only. See Service Advisor for complete details. Expires EOM.

$75 OFF B Service

Mercedes-Benz customers can save $75 off next B Service.

 

 

 

Present offer at time of write-up. Cannot be combined with other offers or incentives. One-time use only. See Service Advisor for complete details. Expires EOM.

(Service B includes: Synthetic Motor Oil Replacement; Oil Filter Replacement; All fluid level checks and corrections are dependent on factory- recommended service intervals for your vehicle's year and model; Tire inflation check and correction; Brake component inspection; Reset maintenance counter; Adhere to all required elements listed by model year and specific model as indicated on the corresponding service sheet for Mercedes-Benz Maintenance Systems in the USA; Cabin dust/combination filter replacement and Brake fluid exchange.)

$25 OFF A Service

Mercedes-Benz customers can save $25 off next A Service.

 

 

 

Present offer at time of write-up. Cannot be combined with other offers or incentives. One-time use only. See Service Advisor for complete details. Expires EOM.

(Service A includes: Synthetic Motor Oil Replacement; Oil Filter Replacement; All fluid level checks and corrections are dependent on factory- recommended service intervals for your vehicle's year and model; Tire inflation check and correction; Brake component inspection; Reset maintenance counter and Adhere to all required elements listed by model year and specific model as indicated on the corresponding service sheet for Mercedes-Benz Maintenance Systems in the USA.)

Complimentary Uber Service

We offer Uber as a transportation option for when you need your car serviced!

Ask your Service Advisor about taking advantage of our complimentary Uber Service

Present when order is written. Can't combine with other offers. Invalid for prior purchases. Not responsible for typographical/printing errors. Some models are higher. Other restrictions may apply. Local pick-up and delivery.

Collision Center Complimentary Estimate

Our state-of-the art body shop is equipped to handle body repairs and restorations.

Call today to schedule an appointment for a Complimentary estimate. 

Expires at end of month.

Dealer Select Specials

Proudly Offers

Valet Service, Express Service, Complimentary Car Wash + Vacuum, Free-Wifi, Complimentary Shuttle Service, State-of-the Art Facility and Equipment, Continental Breakfast, New Mercedes-Benz Loaner Vehicle

**Complimentary valet service to and from train station. Mercedes-Benz of Greenwich service department offers a shuttle service to and from the Greenwich Metro train station our shuttle service will drop you off starting at 7:00 AM and our last pick-up in the evening at 8:00 PM. Contact your Service Advisor for more information.

Touch Free Service w/ Night Drop Off!

Night Drop-Off
• Fill Out Envelope With Your Information
• Sign Envelope And Insert Your Keys
• Insert Envelope Into Drop Box
• Service Advisor Will Contact You Within 24 Hours Or Less

When the service is complete, we will wash your vehicle and disinfect all touch point areas inside the vehicle (door handles, shifter, center console, front seats, dashboard and the ignition key). After cleaning the steering wheel, we will install a steering wheel cover. 

Posted in Parts, Service