Grandcouper

so my car came with one fob. I looked online for a spare and noticed that my fob was on ebay. I suspect it's an aftermarket fob. Do I buy the aftermarket fob and bring it to the dealer? Or should I just go to the dealer and get a key? How much can I expect to pay? Plus my start button doesn't work. How do I get it to work?

pmercury

iTrader: (2)

a fob for you is the plastic key case right ?

the plastic case does not make your key malfuction

what works ? remote + key in ignition or only key in ignition ?


does your key open without pushing any buttons ? (that is part of keyless go)

please detail

Grandcouper

Nothing works without pressing any buttons. Keyless is non active.

Grandcouper

the fob works to start the car, and unlock the doors. But I have to use the clicker.

pmercury

iTrader: (2)

ok

that means you have battery working

keyless go is inactive

that can have many causes

most of the time, the rubber buttons on your doors get leaks after years, that creates a shortcut in the keyless system and desactivates it

it could also be you keyless go key not or no more registered in the system

or your module not working

or antennas

you need to find a person with DAS system and do a scan

that will tell you what's wrong

99% chance it is not your key

a key cost 275 USD at Mercedes

so do a scan

I guess that its your door buttons

tusabes

You can only get a working key from a Mercedes dealer

the only thing you can buy on eBay related to the key is the plastic case /outer shell of the key .

You can't buy a used key from eBay and have it work with your car , unless you buy the entire set of 4 anti theft parts - key , ignition switch , shifter and Ecu . If they are a matched set from a donor car they will work to start your car , but they might not work with keyless go .

pmercury

iTrader: (2)

he probably doesn't need a new key and second: yes, you can buy blank key from china and get them programmed by a specialist in some countries like the UK

they decode your EZS, EZS has to be removed for that

also, if you key is dead, you can get a second hand same key from ebay and solder the keystring holding chip to that key and you'll get a working key

ONLY 1 CHUP HOLDS YOUR VIN, that chip is one time writing

pmercury

iTrader: (2)

https://mbworld.org/forums/audio-ele...-retrofit.html

MacVidMB-V8

If that black key is really for a car with KeyLess-Go, I don't think it can work for Chrome upgrade.

If you only have one key, bust out $300-400 and get a 2nd from dealer.

Hurts, but hurts less than what is involved if 1st one dies or is lost.

pmercury

iTrader: (2)

My locksmith in the UK confirmed that too, we can upgrade to chomekey too
but it is a soldering job also