Hi there!
I own a 2006 IS250. Still in great shape, but the dashboard needs a good cleaning.
Lately, the dashboard seems to be very sensitive to scratches. Almost as if the plastic/composite material starts to decompose...
How can I best clean my dashboard?

 

Sticky/melting dashboards were/are an issue for the 2006 IS (and several other Lexus and Toyota vehicles); there are many threads here on ClubLexus about this topic. I don't know about the EU, but in the US there was a Lexus service campaign that offered affected owners free replacements. That program ended in 2017, so wouldn't help you even if you were located in the US, but you may want to read about it below.

https://static.nhtsa.gov/odi/tsbs/20...32886-9999.pdf

 

I use small foam sponge and leather cleaner/conditioner that protects from sunlight.

 

Sadly at this stage only new dash makes it better. Cost of the part is about 400 USD, in EU at least double or more. Also door cards decompose and these are even more pricey.