KEYLESS-GO versus pressing the remote buttons
Say if the car responds to the lock buttons but not to touching the door handle, or if the buttons fail too. These describe different problems. When another key is available, comparing the same functions in the same place helps identify what still works.
Mercedes-Benz’s EQS Saloon 2023 manual lists a weak key battery among possible causes of KEYLESS-GO problems. That is not a diagnosis for every Mercedes-Benz: instructions and remedies depend on model and year.
Describe recognition problems and an unresponsive remoteIs the key lost, or is another one available?
If the only key is lost, start by checking replacement options and vehicle-system compatibility. Mention a working key held by another driver; preparing a spare involves different conditions. An earlier key photo can also help clarify the request.
If a working key is locked inside, the first request is to unlock the car. Keep that distinct from preparing a new key.
Replacement options when no working key is availableA Mercedes-Benz backup blade
A mechanical blade, if your key has one, provides the mechanical functions supported by the vehicle. Opening a door does not establish that the remote is recognized for starting. When asking about price, say whether you need a backup blade as well as a remote.
Follow the appropriate vehicle manual for blade use and backup operation. Do not use another model’s instructions simply because its key looks similar.
A replacement or separately purchased remote
Send a photo and part details before arranging programming. A new key, used remote and empty casing are different products. Neither a logo nor button count establishes compatibility. The possibility of using your part is checked before work begins.
What to check before buying a key or remote onlineWhat should be tested at completion?
Check remote operation, starting and proximity access if these were included in the agreed work. Also test the previous key if it remains available, and ask what the warranty covers.
The quote should describe the requested solution and functions rather than just say “Mercedes-Benz key.” Confirming this scope helps you assess the finished work against what was agreed.
Checks for the new and previous keysOriginal Key Replacement photographs
Original material supplied by the business. These photographs do not establish a job in a particular locality or compatibility with another vehicle.
Official information for further reading
Sources refer to the particular versions, years and markets identified. Use the manual appropriate to your own vehicle for operating instructions.