SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: RED & GREEN LIGHTS FLASHING ON REAR VIEW MIRROR

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Old 10-13-2022, 11:46 AM
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1996 SL320
RED & GREEN LIGHTS FLASHING ON REAR VIEW MIRROR

iI just bought a 1996 SL320. The key remotes only work mechanically.
I replaced key batteries & they still don't work but the red & green lights on the mirror are flashing together or back & forth when the button on the remote is pressed.
Any thoughts on getting them to work ?
Is there something to reset? The car battery was replaced about a year ago.Previous owner said the remote locking never worked in 5 years of ownership
but he didn't know to replace the batteries.
Old 10-14-2022, 05:08 AM
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1997 SL500 Sport pano
Do you have the Owner’s manual? A reset procedure would be in there.
Old 10-14-2022, 05:09 AM
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1997 SL500 Sport pano
https://mb.clifton.io/r129/ For an Owner’s Manual
See 1996 manual, page 127 to resync the key fob

Last edited by BoatWaco; 10-14-2022 at 05:20 AM.
Old 10-14-2022, 11:09 AM
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1996 SL320
Originally Posted by BoatWaco
https://mb.clifton.io/r129/ For an Owner’s Manual
See 1996 manual, page 127 to resync the key fob
Tried that but nothing changes.Red & Green light continue to flash together for about 30 seconds then they go out.
Doesn't want to syncronize.
Old 10-16-2022, 08:34 PM
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1995 SL500 - 2017 AMG GLC 43
Watch this YouTube video starting at 14:26. Says flashing is caused by not opening the car with a key fob.

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