You need vcds to do this

After-wipe of windscreen wipers when windscreen washer has been used:

[09 - Cent. Elect.]
[Coding - 07] -> Dropdown -> "x -- 8K1 955 119 -- WWS xxxx" -> Long Coding Helper -> Byte 1

Bit 3 - Remove check mark (1 = active)

Headlight washer - duration of wash:

[09 - Cent. Elect.]
[Security Access - 16]
[Adaptation - 10] -> Channel 6
change to e.g. 500