Search for "LCM Repair" or just "LCM". Sounds familiar. I don't think the fix works with the LCM III (without the heatsink). YMMV.
'99 528i ('98/12 build). 282,000km BY29428/Royalrot
Breaking My Wallet since 2009
Mods: Stoptech SS brake hose, 280piece toolkit resting on trunk floor, Beisan VANOS seals, increasing amounts of duct tape and glue
'99 540i (grandfather's)