My T-roc AID (MY 2020): A flawed beauty!
I liked everything about my T-roc AID except one thing, ie missing clock
on top centre of display.
It's a minor but significant flaw considering you need to take your eyes off the road to look at MIB to see the time! Heck.. even my old 7 year old polo has time displayed on IC.
VW corrected this blunder from MY 2021 T-roc.
I was determined to see if this injustice can be fixed in my T-roc AID. I started investigating this issue, and the more deeper I went into the rabbit hole, more startling information I found which I would like to share here with everyone.
To begin with I obviously started looking at long codings and adaptations of addresses 17, 19 and 5F. Hit a dead end there.. there is no such coding or adaptations to enable time on AID. Further in my naivety I messaged few cluster experts in Drive2 forum but there was a silence, no one replied. Then I contacted a senior technician at my VW dealer to see if he knows something. He replied positively and told me to get my T-roc, there is a firmware update for AID which might fix the problem.
My T-roc AID firmware was updated by loading the firmware in SD card in 5F control unit in glovebox. The entire process took around 20 minutes.
The AID goes blank during flashing.
Comparison of SW version before and after update.
After successful update, the cherished time did not appear on AID.
Later on I found out that, there was an TPI
issued by VW in the form of firmware update to fix the automatic trip reset issue on few batches of AID of PR series 9S0
. I never faced the issue of trip values resetting automatically to 0 in my T-roc AID! The firmware update didn't bring anything extra functionality wise. Back to square one again.
With hopes dimming, I went to an extent of considering to install new AID from 2021 Model T-roc
That's when interesting revelations came to surface.
Here is the brief summary of why I cannot buy a brand new AID from 2021 T-roc onwards and install in my 2020 T-roc even though both look same. Devil is in the details and there is more than meets the eyes.
1. The newer AID's installed from MY 2021 onwards has different part no (17A 920 320B HW502/523, SW5175/6170
etc..), compared to mine 2020 AID (17A 920 790B HW 502/ SW4193
). Both AID's are not intercompatible because immobilisers are different. Not only immobilisers are different, VW has changed the way AID's handshake with 5F(MIB unit) from MY 2021. My 2020 T-toc AID communicates with 5F through fibre optic cable (MOST)
and AID's from MY 2021 communicate with 5F through Ethernet
cables! The reason for such a change is due to introduction of MIB3! from MY 2021 across the MQB car models.
Thanks to my VW service centre senior technician for permitting me to click few pictures of MIB3 installed in MY 2021 T-roc, which was at dealer for accident repairs.
: Interestingly, MIB3 control unit is totally sealed one without CD drive and without SD card slots. I guess MIB3's can be accessed only through UBC-C ports installed in central console of T-roc MY 2021 onwards.
MIB3 quadlock connector with Ethernet wires:
They say time is money, I have neither...
There are many updates which have happened in my T-roc, details coming soon.