Before I go back to the dealer , I am going to ask here, because I know some one will know the answer.

I had A new key made for my car by the dealer with my vin # tru the dealer a bought it from.

Well I got the key Friday and it works ,I can lock and unlock the doors with the buttons , when I hit unlock two times the windows and sun roof will open and on lock the second time I press lock the windows and sun roof will close.

But my Keyless Go Don't work when I try it , Question Is What Is The trick or setting to get KEYLESS GO to work On My 05 S500 W220

Thank you for any help in this matter
Harley03joe

Sounds like something is wrong the fob or there is a certain procedure to program a new fob so its 100% functional

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)

On keyless-go cars after 2003 that use a "smart-key" the key track must be validated with a DAS laptop.

ONLY 2 keyless-go keys can be used.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Either that or the dealer ordered a normal smart key instead of a smart key with keyless go.

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350