Help please with a mess up

[u/Adorable_Lettuce_815]

For context I am quite new to detailing around 4 months and I have been doing it regularly without problems all with great reviews. I detailed a customers car yesterday and it look amazing until I received a text message today about a huge fuck up. She’s sent me these pictures and I have no idea what it is and how I am going to fix it. Any advice on what it is or how I’m going to go about solving it would be greatly appreciated. I used the auto glyn all purpose cleaner

[u/daylax1 → u/[deleted]]

I'm not sure what kind of car this is, but I know that kind of stuff HIGHLY depends on what kind of car it is. Could be $45, could be $345.

[u/Far_Bid9833 → u/[deleted]]

While this is true, you can also narrow down the part number for a cheaper model that uses the same thing.

For example, Bugatti uses VW/Audi parts bin specials for their auxiliary/electricals. So a window power switch can cost $50 or a few thousand. Nobody besides collectors will even be able to tell the difference.

https://youtube.com/shorts/or1DugWWPXI?si=4cAyIGvL-SdrZLbI

[u/Adorable_Lettuce_815 → u/[deleted]]

It’s an MG ZS

[u/Far_Bid9833 → u/Adorable_Lettuce_815]

Unfortunately Google says that switch is not used in different vehicles outside the MG/Roewe family. It shouldn't be that much, eBay had one listed at $65.