07-07-2025, 10:59 PM
Quote:My question is: does anyone know if it’s possible to replace this module (VDDM/ABS module) with a used unit and perform a VIDA reload on it? A new one costs around $700, while a low-mileage used one is about $160.Nope. those modules are VIN coded. However, some shops can replace the chip(s) from original to new.
Quote:I found out that the VDDM acts as a CAN master, and the signal goes to that module first before reaching the ECM and TCM.
This is not correct. There is no such thing CAN master in the CAN network.
All CAN modules (ECUs) sends messages through the can network. (1 pair of twisted wire) The network is terminated with 120 ohm resistor at the each end (In ECM and VCM) So that the total resistance of a healthy CAN measures 60 ohms.
Before even jumping to conclusions and trying to replace modules, first check the physical wires and connections. A faulty ABS / VEHICLE DYNAMICS DOMAIN MASTER should not not cause all other modules become unresponsive to diagnostic commands unless it has internal short.
Quote:Forum post with similar issue:
https://www.scannerdanner.com/forum/post...ml?start=6
Not every outcome have the same reason! Who ever did the brake job on that car might shorth the sensor(s) that cause the ABS module to short.