Návod k odvzdušnění je zde:
M47TU:
Note:
When adding coolant, it is absolutely essential to adhere to the following sequence:
1) Remove cap from expansion tank (ET)
2) Open all vent plugs:
Radiator feed - ET branch piece
Coolant return pipe
EGR cooler thermostat
Heating cooler feed
3) Add coolant slowly
4) Close vent plugs on coolant return pipe and on radiator feed (ET branch piece) after coolant emerges
5) Fill ET with coolant up to edge
6) Close vent plugs on EGR cooler thermostat and on heating cooler feed (no emergence of coolant during filling procedure)
7) Start engine (idling), set heater to maximum and fan to low stage (if necessary, top up coolant to max. fill level)

Close ET cap, press accelerator pedal several times up to approx. 2500 rpm
9) Remove ET cap and if necessary top up coolant to max. cold fill level
10) Run engine at idle for approx. 5 minutes with open ET (until bubble-free coolant can be seen to emerge in ET); if required, top up coolant to max. cold fill level
11) Close ET cap
Jinak i s obrázkama odkaz zde:
http://babybmw.net/viewtopic.php?f=29&t=32908Jsou tam 3odvzdušňováky, dělal jsem to minulý měsíc. On tam sice píše ještě odvzdušňovák na chladiči, ale ten já tam asi nemám nebo jsem ho nenašel

Jinak mi to na diag píše taky chybu toho pomocného čerpadla. Ale zatím jsem to neřešil.