Most mercedes models made after 2005 use a key fob, or a push to start remote key technology. If i don't disengage the key it just keeps trying to start.
Supercharged sedan (4 door) once every 4 years for optimal performance.
How to replace mercedes key battery 2007. There are several mercedes smart key remotes so make sure to look at the correct video. We strongly recommend using a lithium battery like these one s, as they last much longer. When changing a chrome key battery, pull on the tab at the bottom, push the key into the narrow end of the slot to remove the cover, and replace the battery.
Make sure to save the engine start/stop button so that. The battery is strong and everything electronically works. Open the hood and locate the battery on the passenger side of the engine bay.
Then, push it into the narrow opening to unlatch and loosen the cover. At burdi motorworks, we have offered vehicle repairs and parts for mercedes owners in and around chicago, ill., for more than 40 years. Do keep battery contact surfaces clean by gently rubbing with a clean pencil eraser or cloth.
But when issues with these keys inevitably arise, it is assumed that the owner must go to the mercedes benz dealership for diagnostics, repair, reprogramming or. Press the brake pedal and make sure the transmission is in park position. It cranks but never catches/starts.
Replace your batteries and slide everything. Once you’ve removed the cover, remove the exposed cr 2025 batteries and replace them with new ones. It is ok if the smart key battery is dead.
Remove all used batteries from the device at the same time, then replace them with new batteries of the same size and type. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a. Put the key fob back together and test each button shortly to confirm function.
First model smart key fob (oldest version) the oldest version looks slightly different from the one that comes after it, but the mercedes key battery replacement process is the same. To change a mercedes key battery, start by pulling the silver tab at the bottom of the key holder back to release the manual key. The key will engage and the car will attempt to start but wont.
Do replace batteries with the size and type specified by the device’s manufacturer. Generally speaking, when mercedes key fob is not working, it’s because either because the key is defective or the all activity module (aam) is not recognizing the key signal, or it is not receiving signal due to an antenna issue. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a.
Release the key as soon as the engine cranks. First you need to identify which key you have. Pull the grey tab, take out the key, insert it into the groove from the side, then pull out the battery compartment.
Pull the hood release under the hood of your s class. Common mercedes key fob problems Disconnect the negative terminal first by loosening the 10mm bolt.
Insert your smart key into the ignition.