The speedometer on my 2005 Touareg V6 stops working intermitently and when that happens, I get a brake and abs light, along with check engine light. Also cruise control works sometimes, but mostly not at all. Mechanic says I need a new ABS module.
Independent mechanic or VW shop? Those symptoms might also be related to bad wheel speed sensors and/or wires/connectors in those circuits. It is IMPORTANT to get a scan with VCDS and figure out what that is telling you.
You should replace your battery first, then have some one clear any faults found using vcds. Take it for a drive and the rescan for any ABS module specific faults, if nothing comes up then no need to replace the module, if the problem returns then at least you now know it's not supply voltage related and then start on the ABS module.