Upgrading the IC, CCS, MFSW & Bluetooth Premium

Upgrading the instrument cluster, Cruice Control System, Multi Function Steering Wheel and Bluetooth Premium.

Information about the parts

# Instrument cluster MFA Plus — Polo BlueGT (6R0 920 870 CX)
— enable needle sweep (indicator celebration / gauge test / staging)
— Add data MFD. Refuel.
# Multi function steering wheel — Scirocco R-line (1K8 419 091 AP QGW RLINE)
# Airbag — Golf 7 GTI (5G0 880 201 J, 5G0 971 584 D)
# Cruise Control (stalks 6R0 953 521 B, ring 6R0 959 654)
# Bluetooth Premium — Passat CC (3C8 035 730 E)
# VW Bluetooth Foam Cover — Golf VI (1K0919737M)
# GSM Antenna for Premium Bluetooth 5N0 and 3C8 (900/1800 MHz dual-band capability, CE compliant)
— Wi-Fi hotspot /rSap
— Voice Comand
— A2DP — Bluetooth Audio Stream, show title / artist name on MFA or head unit,
— full control of bluetooth device by MFA or head unit
— SMS reading on head unit or MFA / writing on head unit

I couldn’t find used instrument cluster from Polo 6R BlueGT 240km/h in Poland, so I had to buy a new one in the authorized car dealership. Unfortunately, the authorized service center in Poland don’t change IC coding, if someone swap his IC to another, higher model. If you change the instrument cluster to the same model, they could coding this.
So I had to look for someone, who does such “magical” things. After a while I found a person, who has the right tools to change EPROOM coding in my instrument cluster.

Time for changes…

My instrument cluster was ordered from an authorized Volkswagen service center for VIN of my car, so there were no problems with the fuel pump (it could be connected all the time).

For used instrument cluster, remember to disconnect the plug from the ABS pump when connecting the speedometer!

We had to turn off the indicator light of washer fluid level because I don’t have this yet. In the next step we enabled extra option: Refuel volume in the MFD settings.

Time to set the correct mileage (previous was entered only for test it):

Mileage in the old instrument cluster

Mileage on the new instrument cluster (there was no option in Krzysztof’s program to set the last digit)

Removing that ugly steering wheel

Without a steering wheel, there is a lot more space in the driver’s seat. Unfortunately the car’s control is deteriorating… 😀

Installation of MFSW and CCS

More info about Muti Function Steering Wheel:

More info about Cruise Control System:

When there is no any power nearby, the easiest way to connect a 12 Volt Proxxon soldering iron is to connect it directly to the battery.

Connections to MFSW were made according to publicly available tutorials, it’s time to connect the wire to the ECU.

By the way, we connected cruice control and new multifunction steering wheel from Scirocco ’15 R-Line.

Then, another obstacle appeared. On the finish , when we just needed to connect one additional terminal to ECU I had a little torment, because in my Polo was additional protective frame (for vehicles with immoblizer, anti-theft warning system and interior monitoring) to prevent direct getting to the ECU.

OMFG, night was coming… Fortunately, I found an old, blunt metal saw blade in Chris”s garage. After a dozen or so minutes of fighting, I finally managed to cut metal interlock (6Q0 907 500B).

This is what it looks like:

Great, time to connect last wire:

At the end I connected Bluetooth Premium from Passat CC (rSAP, WLAN, A2DP, SMS etc.) with microphone on roof headlining. I am very happy with these modifications 🙂

Problems encountered

Unfortunately, it was not without problems…

First problem: failure of communication between the ECU and brake system

First of them was “Error: stabilisation control (ESC)”, which was appearing after pressing the gas pedal and causes that the car did not start at full speed, it was impossible to drive fast due to the emergency mode. Re-calibrate the steering angle sensor was also not possible to do.

I tried everything: changed the instrument cluster to the old one, changed the stalks and ring to the old ones, disconnected the cruise control wire. The fault was there all the time.

The problem was a failure of communication between the ECU and brake system. We checked the cables connecting the gas pedal to the ECU and it turned out that one of the pins was badly connected in the plug of the ECU.
When connecting an additional pin to the ECU, another pin in the ECU got loose and because of no correct connection this fault appeared.

Second problem: differences in T41 connection

The second problem was the wipers, and more precisely, the upshifting stopped working. Few days after mod I noticed that change the speed of the wipers not work.

Usually, when the problem with changing the wipers appears when changing the stalks, it is caused by the incorrectly inserted T41 plug.

I checked if the connector (T41) is fully seated, and this is what I saw:

It was impossible to insert deeper a white plug (T41) into the stalks (6R0959654).

Differences in rings

The ring also has a slightly modified mount.

Photos of my old ring – 280 690 A07:

Photos of new ring – 6R0 959 654:

Differences in stalks

Solution

I didn’t feel like changing the T41 plug so I decided to adjust my stalks connector to the T41 plug:

Now it fits perfectly:

Conclusion

My old ring and stalks, Model Year “C” 2012 are different from the new ones because in Model Year “D” and “E” 2013-2014 ring and stalks were replaced in Europe (in other places remain for some time, eg India.).

Similar problem had Gannu_1 when he connected older clockspring 6Q0969653B (without ESP) to stalks 6R0953521C.
He wrote about it in his great tutorial about Cruise Control System retrofit: