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Winter Washing

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Old 11-13-2018, 09:01 PM
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2018 C43 coupe
Winter Washing

With the first threat of snow here in the US Mid-Atlantic, I am wondering how best to wash salt from the undercarriage of my C43. The manual says an automatic car wash can trigger the hands-free trunk release - is there a way to turn it off? Any suggestions for undercarriage wash would be appreciated.
Old 11-13-2018, 09:12 PM
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Old 11-13-2018, 10:19 PM
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OK - almost any suggestions! Hilarious - thanks for the laugh!
Old 11-13-2018, 10:40 PM
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You can get 90 degree attachments (and probably ones specifically for the job) for pressure washers which makes washing the underside very painless.
Old 11-13-2018, 11:26 PM
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I use a black and decker snake wand (link below), warm/hot water hookup, Im lucky to have access to a heated garage with drainage but have no problems pulling the hose outside to give the cars a good wash in cold weather.


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Old 11-14-2018, 05:21 AM
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Originally Posted by Rebelwon
With the first threat of snow here in the US Mid-Atlantic, I am wondering how best to wash salt from the undercarriage of my C43. The manual says an automatic car wash can trigger the hands-free trunk release - is there a way to turn it off? Any suggestions for undercarriage wash would be appreciated.
I live in condo so use touchless car wash once a week and have never had a problem with my trunk opening
Old 11-14-2018, 05:31 AM
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The biggest thing is to minimized actually touching the surface when it's full of contaminants (salt residue, dirt, etc). My closest touchless wash has a "dust buster" run mode that's basically just a high pressure spray followed by spot free rinse, including undercarriage spray. I'll do this to avoid the harsher touch free chemicals, but follow up with a "waterless wash" procedure while the car is still wet from the wash(Chemical Guys makes an acceptable waterless wash spray that I've noticed is available at Walmart now). While the car is still wet, spray on the waterless wash and wipe with a MF towel using a rolling contact motion.
Old 11-14-2018, 10:46 AM
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If you’re worried about the trunk opening, just lock the trunk the same way when you have it valeted. The switch should be inside the glove box.
Old 11-14-2018, 12:56 PM
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Foot trunk doesnt work unless the key is with you at the trunk.
Old 11-14-2018, 01:41 PM
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Thanks, all, for the suggestions and info!

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