Replacement Key will not Start SL500 - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 05-05-2009, 06:31 PM Thread Starter
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Replacement Key will not Start SL500

Hi folks, I have a 1997 SL500 Sport and recently bought a new master key. The old keys with the remote lock/unlock function both work in all doors and ignition but the new key will turn the engine over but will not allow it to start. Do I need to program the new key?
Thanks for any advise.
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post #2 of 4 (permalink) Old 05-06-2009, 08:24 AM
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Replacement keys (that work) for Mercedes are only and exclusively available at Mercedes dealers. A nice protection for Mercedes owners.

Kent Christensen
'07 GL320CDI
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post #3 of 4 (permalink) Old 05-06-2009, 09:59 AM
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Ditto to Kent, and if you bought your new key from a dealer it should already be programmed.

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post #4 of 4 (permalink) Old 05-06-2009, 10:00 AM Thread Starter
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Kent, thank you for your reply. I guess I wasn't explicit, the valet replacement key was from MB dealer and they, at least the one tech. I spoke to, didn't understand why it unlock the doors, turned in the ignition and turns over starter but will not fire engine. The two Master Keys with the remotes work fine. I even thought maybe if I lock and unlocked the doors first with the valet key and then tried it in the ignition that might work but it didn't. Thanks for any additional insight.
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