B156D:55-48 Tried changing modem today already changed ACM. “TCU Customer Connectivity Settings Synchronisation With HMI”. No ESN modem serial in Sync 2.5
Interestingly TCU asbuilt on the original fails with Configuration structure mismatch but works ok on the donor. Donor still has the fault… If i’ve done it correctly.
TCU is a KT1T-14G087-EP as is the donor. Firmware update done with Forscan.
I have very little knowledge with Forscan etc. No other DTC’s
Any suggestions ?