SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: 03 SL500 remote problem

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Old Mar 10, 2008 | 06:53 PM
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03 SL500 remote problem

Basically my remote stopped working. Can't close the door, can't open the door, can't open the trunk, but when I press the remote, the little red light at the rear view miorros would blink, so the remote is not entirely dead, just not working right.

So what do you think is the problem? Battery in the remote? Battery in the car? Wiring issues? Thank you for any input.
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Old Mar 10, 2008 | 07:21 PM
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gqa
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05' sl 500
is this the key less go card your talking about? i believe the 03's had a separate card and key

if its the key itself, will it start the car? if not i might just need reprogramming.
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Old Mar 10, 2008 | 08:01 PM
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First check whether the other key works. If both keys stopped working, I'd suspect something in the car. If the other key still works, then the guesses would be 1) battery 2) key re-programming. Not sure if you can re-program or need the dealer - I had a new key reprogrammed by the dealer.
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Old Mar 10, 2008 | 08:34 PM
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Thanks. This is the regular key (not keyless go). It WILL start the car no problem. I have been driving it lately using the metal key to get in and out.

Originally Posted by gqa
is this the key less go card your talking about? i believe the 03's had a separate card and key

if its the key itself, will it start the car? if not i might just need reprogramming.
Reply
Old Mar 10, 2008 | 08:36 PM
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That would be a great idea, except unfortunately, this is the only key I have...

Originally Posted by ToonArmy
First check whether the other key works. If both keys stopped working, I'd suspect something in the car. If the other key still works, then the guesses would be 1) battery 2) key re-programming. Not sure if you can re-program or need the dealer - I had a new key reprogrammed by the dealer.
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Old Mar 10, 2008 | 09:26 PM
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05' sl 500
ok it sounds like your battery in the key. also when you replace it make sure the 2 contacts next to the batt stick up.

im sure you already know but you have to get a second key in case of an emergency. i.e. your 1st key completely craps out

you can get that battery at radio shack. i believe its a cr2032
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Old Mar 10, 2008 | 09:40 PM
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SL500 2003 Designo (sold), SL500 2004, Nissan GT350
Sounds like a dead battery. However the key will start the car even with a dead battery.
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Old Mar 10, 2008 | 10:09 PM
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battery plus get another key
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Old Mar 11, 2008 | 10:23 AM
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Absolutely. I will go get another key...

Originally Posted by SL2003driver
battery plus get another key
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Old Mar 8, 2010 | 07:50 PM
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i've got the same problem now, its been acting up lately.

Originally Posted by gqa
you can get that battery at radio shack. i believe its a cr2032
how simple is it to change the battery?
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Old Mar 8, 2010 | 08:21 PM
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From: Houston, TX
2003 SL500, 1998 E320 Wagon
I agree with the rest, I would try the battery key first. However, if the car can start with the key fob then it could be something else. The automatic door openers work on a vacuum pump that is located in the trunk. Can you unlock the trunk through the button inside the car? if you squeeze on the truck latch do you hear the actuator trying to open the trunk? is there an air leak?
Like I stated in the easiest thing to check is the battery, you can buy it at Lowes for less than $6.
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