- First, you have to pull down on the silver, square-shaped tab on the bottom of the key. Pull until it releases.
- Once you separate the tab, you’ll see a small gap in the fob.
- Remove the old battery, and replace with the new battery.
Likewise, how do I change the battery in my Mercedes key fob?
People also ask, how do you open a Mercedes when key doesn’t work? Insert the key into the ignition. 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.
Furthermore, how do you open a Mercedes key fob 2009?
Additionally, how much does it cost to replace a Mercedes key fob? A: That depends on the year, make, and model of your car. To replace a Mercedes key range between $200-$1300. However, that price may vary depends on the availability of code, type of key (chip, fob, “push to start”, remote), your location, time of day, and more.
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Can a locksmith make a key for a Mercedes?
A mobile locksmith is the best when it comes to both price and convenience. … For the most part, locksmiths should be able to help you replace or duplicate your Mercedes-Benz key at a better price than a dealership, in part because they should be up to date with the skills and equipment required.
Why does my key fob battery keep dying?
There are some common reasons why batteries die. For example, a battery can drain due to improper use or storage. … Every battery is different. While this may be the case for your key FOB, there is another reason it could be dead and, in this case, you might have to think outside the box.
What kind of battery does my Mercedes key need?
A SmartKey® requires two CR 2025 batteries, and the older Chrome Key does too. The newer Chrome Key only requires one.
How long does a Mercedes key battery last?
Although three to four years is a good “safe” estimate, some key fob batteries may last for up to ten years before they require replacement.
Why does my Mercedes say key not detected?
The most common reasons why a car won’t detect the key fob are: Keyfob Battery – The battery inside your key fob is dead or too weak. … Weak car battery – The car battery is partially discharged and can prevent the immobilizer module from working. Charge the car battery or replace it if necessary.
How do you open a Mercedes door with a dead battery?
Why won’t my Mercedes unlock?
Your Mercedes Benz receives the Lock or Unlock signal from antennas installed on the car, so a bad antenna module fuse can cause your key to be unable to unlock doors. … If you find a blown fuse, replace it (using the Ampere rating recommended by the manufacturer.
What is Mercedes smart key?
The latest SmartKey features more distinct buttons that are easier to operate without looking at the unit. … Mercedes-Benz SmartKey Can Include KEYLESS-GO. Walk up to your locked car, simply pull the door handle, and the car unlocks.
Can I use CR2032 in Mercedes key?
If your Mercedes-Benz vehicle is from the model year 2017 or later, you likely have the newest type of Mercedes-Benz key fob. These key fobs use a CR2032 battery. … Press the small button located at the bottom of the rear side of your key fob. While pressing the button, slide the black cover piece off the key fob.
Can I drive my Mercedes without key?
Mercedes KEYLESS START®: With KEYLESS START®, you can step on the brake or press the Start/Stop button on the dashboard to start your car—no key required. This feature comes standard across the Mercedes-Benz lineup.