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

SL/R129: Learning about switches and controls.

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Old 05-17-2022 | 12:27 PM
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A1H2O4U's Avatar
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1999 SL500, 2018 Jeep Grand Cherokee, 1969 Dodge D-200, 1970 Dodge D-100, 1970 Chrysler Newport
Learning about switches and controls.

Dumb question time. What is the purpose/function of the W/S toggle switch next to the shifter in my 1999 SL500?
Old 05-17-2022 | 12:57 PM
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MY2000 SL500
"The only dumb question is the one that goes unasked"
Check out this site for an owner's manual. It will list what all those switches and buttons are for.

https://arkiv.mbentusiastklubb.no/modeller/129/

Hope this helps

Check page 88 of the 1999 manual.
"Program Mode Selector Switch"
The transmission is provided with a

selector switch for Standard "S" and
Winter/Wet (snow and ice) "W"

program modes.


Pretty sure this is what you are asking about.

Last edited by pjacobs55; 05-17-2022 at 01:07 PM. Reason: Ad info
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Old 05-17-2022 | 01:37 PM
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1999 SL500, 2018 Jeep Grand Cherokee, 1969 Dodge D-200, 1970 Dodge D-100, 1970 Chrysler Newport
Originally Posted by pjacobs55
"The only dumb question is the one that goes unasked"
Check out this site for an owner's manual. It will list what all those switches and buttons are for.

https://arkiv.mbentusiastklubb.no/modeller/129/

Hope this helps

Check page 88 of the 1999 manual.
"Program Mode Selector Switch"
The transmission is provided with a

selector switch for Standard "S" and
Winter/Wet (snow and ice) "W"

program modes.


Pretty sure this is what you are asking about.
Yes it is. Thanks for the help.
Old 05-23-2022 | 12:32 PM
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From: San Marcos TX
'98 R129 SL500 Sport
It's the 'Winter/Summer' switch for the transmission - alters the shift points, so in winter you take off in second and I think it alters reverse too somehow. Anybody caret to improve on this?
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