AC hissing sound
05-05-2012, 04:59 PM
#1
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E320
AC hissing sound
Hey, im new to this forum and looking for some help. When i turn the AC on in my 1999 E320 there is a slight hissing sound while it is blowing. Has anyone else had this problem? Thanks.
05-05-2012, 10:58 PM
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Mercedes-Benzes: 2005 ML500, 2002 E320 4-Matic, 1993 300E, 1994 E320, AND 1999 C230 KOMPRESSOR
Time to recharge your A/C and inject dye to inspect for future leaks!
05-07-2012, 08:17 AM
#5
Out Of Control!!
The two faults 1234 and 1235 are sun sensor and emissions sensor. The sun sensor impacts the start up fan speed and the emissions sensor impacts the vent closings. On a scale of 1 to 10----these are about 3------the data does suggest( #7,#5) that you are low on refrigerant and therefore the suggestion to get a leak test prior to a refill sounds sensible. Good Luck
