Log#20
Retrofit: Rear doors keyless entry/exit.
Parts:
Rear right kessy handle:
5GG837206B
Rear left kessy handle:
5GG837205B
Wiring kit along with above handles bought from AliExpress.
https://a.aliexpress.com/_mPdNjLy
I must say, the paint quality of these handles is top notch

I hated to get them repainted to my car colour. I got them repainted along with PLA sensors and brackets from my dealer.
viewtopic.php?p=598135#p598135
Not all KESSY modules have necessary pins to support rear door keyless entry!
Important: Many
5Q0* and some
3Q0* modules (for eg;
3Q0959435 B/D/F/K/M/P) are physically devoid of necessary pins for rear kessy handles.
The following modules have necessary pins to support rear door keyless handles
3Q0959435 A/C/E/G/J/L/N/Q.
Reference article with more interesting details from the legend iprot himself
https://www.drive2.ru/l/626552853871198376/
My roc kessy module has the necessary pins!!

and also the necessary pins to support Easy open/ Easy close electric boot via kick( virtual pedal)
Luckily this time, the wiring harnesses for each rear door handles were of just enough length to reach the kessy module, which is located behind the dashboard just below the steering wheel adjustment lever(RHD). Only shortcoming was the length of ground wires which was short, I had to extend them by half a meter.
Finalised wiring harness:
Installation:
Removing stock rear door handles.
Here is useful YT video demonstrating removal of T-roc door handle.
https://youtu.be/qG9tEod9CWo?si=9iVajeI94ba65Cn5
Installing new handle in reverse order.
Wiring diagrams: Courtesy of iichel
Wiring scheme from seller:
Installation pictures:
Simultaneously, I also did wiring for future ambient lights and rear door warning / exit lights.
Coding: I coded the installation of rear kessy handles using Odis-E.
The rear door kessy handles work perfectly like factory installed front handles

Now I have all 5 doors keyless entry with additional touchless boot entry( Easy open)

The rear door keyless entry is very convenient feature in itself, but also if there are little kids in family, who always run ahead of us to open the rear doors to sit inside first.
Video:
https://www.youtube.com/shorts/5pEJoOeWbwk
It is also possible to install illuminated kessy door handles from AliExpress ( for RHD) to add little bling. May be for future

Full kessy is a very very convenient feature to have. I can understand why, Slavik the maverick, went all out and successfully installed full kessy in his Golf

https://www.drive2.ru/l/652159105292568963/