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#1
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Code clearing after MAF swap
(2000 CLK430 Cabriolet)
Does a tech need to manually clear the error codes (170 and 173) after replacing a MAF (mass air thingy). Note: the MAF was NOT generating a 'Check Engine Light' condition. Only error codes (I failed emissions cuz of the codes). |
#2
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'Check Engine Light'
Hello,
Just disconnect the +ve battery terminal, have a beer and reconnect. Usually resets? Brian |
#3
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Any OBDII scanner will erase those codes. Ask local Autozone to scan it for you (free) and erase them.
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
#4
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it's wise to have a benz tester on it to reset the self adaptation parameters.
Some guys disconnect the battery and start the car ten times. I always like to replace the big rubber O-ring that cinches around the mass airflow sensor to give it a nice tight seal near the holding clips. Have seen techs get burned by replacing the maf sensor when the weak O-ring was the original problem in the first place. Just like any o-ring, they can get sorta squared on the edges and not make a good seal any longer. That's why I get one every time I replace a sensor so there is no chance of it sucking air at that seal area. The o-ring cost only about $2.oo. Part # 028-997-97-48. Take this part# with you because it's not in the main parts info, they have to look it up in the micro-fische. |
#5
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I understand the adaptation values will be reset/learned after ~30 miles of normal driving?
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
#6
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After a number of cycles,turn on, turn off, the check engine light should go off.
Mine did, but do not recall the number of cycles. 2000 E320 65,xxx |
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