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  1. General E46 Forum
    Hi guys. I posted a while ago about a high pitched whine coming from above the foot rest under the drivers side of the dash and it turns out that it is the ECU cooling fan (post #13 in the link) that draws air from the interior into the ECU compartment in the engine compartment. Has anybody...
  2. General E46 Forum
    Ok.. here's the DIY for the cricket/electric buzz behind the dashboard (driver's side) culprit is an air blower that feeds cabin temperature air into an electronic cluster across the firewall.. this blower works at all times with the A/C either on or off.. blower is on as long as the key is on...
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