B8 S4 Ownership
Author
Discussion

J886ATV

147 posts

111 months

Friday 7th November 2025
quotequote all
catso said:
That's the carplay unit I have in mine, works very well though if using it for any time wirelessly it kills your phone battery so worth plugging in.

Also integrates well with the car's switchgear, the only annoyance is that whilst selecting various carplay features, you will also be selecting car stuff in the background though using the touchscreen does help mitigate and simplify.

Worth adding on the reversing camera whilst fitting it, IIRC it's only an extra £50 - £60.
Does the car need to have a functional MMI for this to work?

Water in the rear quarter means it seems my MMI is FUBAR - talking to my specialist it seems that buying a second hand MMI is an issue as they can't / won't code it as their software is getting sticky on fitting of second hand parts.

What are my options?

catso

15,669 posts

288 months

Saturday 8th November 2025
quotequote all
J886ATV said:
catso said:
That's the carplay unit I have in mine, works very well though if using it for any time wirelessly it kills your phone battery so worth plugging in.

Also integrates well with the car's switchgear, the only annoyance is that whilst selecting various carplay features, you will also be selecting car stuff in the background though using the touchscreen does help mitigate and simplify.

Worth adding on the reversing camera whilst fitting it, IIRC it's only an extra £50 - £60.
Does the car need to have a functional MMI for this to work?

Water in the rear quarter means it seems my MMI is FUBAR - talking to my specialist it seems that buying a second hand MMI is an issue as they can't / won't code it as their software is getting sticky on fitting of second hand parts.

What are my options?
Well, it connects to the MMI, you need to be able to select the auxiliary sound input and it obviously uses the screen (with a touch screen overlay) and speakers/volume controls etc. so I would think it needs the MMI to be working?

Would have thought that a second hand part would work if you have VCDS or similar for coding though?