v10 tdi bwf

having a hard time bleeding after changing upper radiator hose. i dont hear the heater pump coming on. is their a way to activate the pump with vcds

ivagp said:

having a hard time bleeding after changing upper radiator hose. i dont hear the heater pump coming on. is their a way to activate the pump with vcds

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Try the Output Tests on 01-Engine, one of the tests will usually spin the aux water pump(s) for a little while. If the ECU only supports sequential output tests, you may have to step through some unrelated tests to get to it. If you need to do it multiple times, you may have to actually start the engine in-between, as the Engine output tests often refuse to run more than once between engine starts.

thanks again Jason had no joy in 01 was able to do the output test but could not hear the pump or see coolant circulate. then i went to hvac and did the output test and i was able to hear an air burp. got the air out thanks again

ivagp said:

thanks again Jason had no joy in 01 was able to do the output test but could not hear the pump or see coolant circulate. then i went to hvac and did the output test and i was able to hear an air burp. got the air out thanks again

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Ah yes, should have thought of that. On the more complicated engines like the V10 TDI, some of the electric coolant pumps may be operated by 08-HVAC or 18-Aux Heater. Glad you're sorted.