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  #1  
Old 01-20-2007, 09:08 AM
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Join Date: Feb 2006
Posts: 16
W210 E320, I've knackered my only key!

Hi there,

Well I'm walking for now... as my E320 key fob will not turn in the ignition.

It all started with the remote locking not working.... so I need a new key anyway (am in UK).

I stupidly took the fob apart, and tried to clean connections... ended up pressing THREE buttons on the fob board (lock, unlock - and a third blanked button). I'm guessing that the third button is the IR reset etc...

I know I'll need a new key.

My question is - as the car wont move, whats the procedure for MB to give me a new key?

I'm asking here, as the dealers are shut today, so would like to know what I can do on Monday (if anything).

I have no spare, and never have (before anyone asks).

Thanks,

Mike F
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  #2  
Old 01-20-2007, 10:09 AM
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Join Date: Dec 2004
Location: Nashua, NH
Posts: 3,956
I'll assume the rules are the same over there as they are here in the USA. Your dealer will require some proof that you actually own the car (here they require you to show your registration) and they will order you a replacement key. The smart keys do fail, in fact it happens a lot. I have replaced both of my originals over the years after they started to become irratic. Anyway, your dealer will order a key from MB that is correct for your VIN. That's all there is to it.

Here it only takes a day or two, and I suppose in an emergency they could get you one overnight.

Don't even think about buying a key from ebay or anyplace other than the dealer...the keys are programmed for the car's lock code and you can't buy one for another car and "reprogram" it, regardless of what the unscrupulous ebay sellers will tell you. You have to bite the bullet and buy it from the dealer.

I just got one and the best price I could get was just over $100 though my local dealer wanted alomst twice that...so I would guess you will land up paying somewhere about 75GBP for one.
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  #3  
Old 01-20-2007, 10:37 AM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
Posts: 3,596
I Didn't Think The "Key" Was Active for Starting

I have one "good" key for my 1998 E300D Turbodiesel, and one that went through the wash and is now a "bad" key. The "bad" key will still run the car, it just won't work the doors. But it came with a little switchblade old technology key to get in the door, so I can use the door locks like an older W124 and earlier MB, while the gizmo in the blunt end that goes in the starter spot stll works. I understood there is some inert thing the car's starting key hole reads and responds to. Not sure if it has any electrical functions, as my "bad" key is really dead, electrically and it still works starting the car. Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #4  
Old 01-21-2007, 06:23 AM
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1997 W210 E300TD 243,000
 
Join Date: Mar 2006
Location: Manchester, UK
Posts: 983
You're looking at about 120 all in. Thats the key and fob. I know because I had only 1 key, and decided to order a spare.

BTW, the new key has a shorter metal key than the old ones, which makes locking the boot interesting It can be done though, you just have to use the keyring to get leverage
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  #5  
Old 01-21-2007, 10:40 AM
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Join Date: Oct 2005
Posts: 4,263
Quote:
Originally Posted by JimSmith View Post
Not sure if it has any electrical functions, as my "bad" key is really dead, electrically and it still works starting the car. Jim
There are two independent functions in that key (not counting the mechanical blade). The RF transmitter (IIRC) and a transponder. The transmitter is battery-powered and serves the locking system. The transponder takes no battery power and is responsible for identifying the key to the computer. The transponder is powered by the ping from the car, and responds back. I assume that this part is hermetically sealed.
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  #6  
Old 01-21-2007, 11:48 AM
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Join Date: Nov 2002
Location: Milford, CT
Posts: 19,262
Buy two, you should always have at least two keys on hand. Then you wouldn't be walking...
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