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Old 02-08-2014, 08:40 AM
Join Date: Dec 2012
Location: Melbourne
Posts: 3
pplwu is on a distinguished road
Electronics failure heat related?

Hi guys,

With Melbourne's recent hot weather my E70 4.8 started to show electronics failure message and the air con would come out warm on the driver's side with cold air on the passenger side. Seems to be the computer not coping with this heat because at night when everything has cooled down everything went back to normal. Has anyone experienced similar issue?

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Old 02-08-2014, 09:32 AM
Join Date: May 2010
Location: on the edge of existence
Posts: 1,360
blue dragon will become famous soon enough
you are low on freon in your AC.

| '17 F15 X5 35D - Work horse | '17 F48 X1 MSport - Wife's daily | '17 F30 340i MSport - My daily | '09 E70 X5 35D - Out to pasture |
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Old 02-08-2014, 03:25 PM
ard ard is offline
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,110
ard is on a distinguished road
Agree. I seem to recall reading that as freon drops the AC does odd things with air distribution... you'd think the air would just all get warm, but I recall this from elsewhere.

Take it to an AC shop, if they are good they will check pressures and fill- and if they find low they should add a UV visible tracer and send you on your way. Then NEXT time it has issues, they can look for the leak.

GL report back
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Old 02-08-2014, 09:18 PM
Join Date: Dec 2012
Location: Melbourne
Posts: 3
pplwu is on a distinguished road
Thanks guys, I'll take it down to the aircon guys and have it checked, funny today the aircon would all of a sudden stop foe 2 seconds and come back again.
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Old 02-12-2014, 11:37 AM
Join Date: Feb 2008
Location: Chicago
Posts: 178
3Series is on a distinguished road
If you are low on refrigerant, you should also hear a louder than normal hissing sound coming from the vents.
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