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  #1  
Old 12-15-2010, 06:10 PM
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ABS/ASR light on

RE: 1995 E320, this is really wearing thin on me... My ABS & ASR lights have illuminated probably four-times this week. Each time I retrieve the code, I get the one flash. I then clear the codes anyway for the hell of it, and the lights are off until this recurs. The car drives beautifully the whole time the ABS/ASR lights are on - no acceleration issues at all. The OVP was replaced last year with a quality MB-brand relay. When both of these lights illuminate, I have no ABS (I tested that feature in the sand just out of curiosity) until I clear the code. What gives?

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Old 12-15-2010, 07:15 PM
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Quote:
Originally Posted by Boston Benz View Post
RE: 1995 E320, this is really wearing thin on me... My ABS & ASR lights have illuminated probably four-times this week. Each time I retrieve the code, I get the one flash. I then clear the codes anyway for the hell of it, and the lights are off until this recurs. The car drives beautifully the whole time the ABS/ASR lights are on - no acceleration issues at all. The OVP was replaced last year with a quality MB-brand relay. When both of these lights illuminate, I have no ABS (I tested that feature in the sand just out of curiosity) until I clear the code. What gives?
others may be able to weigh in....but it could be the mas relay going south.
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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


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  #3  
Old 12-15-2010, 07:19 PM
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What does that stand for? I'm drawing a blank on MAS.
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Old 12-15-2010, 07:38 PM
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Quote:
Originally Posted by Boston Benz View Post
What does that stand for? I'm drawing a blank on MAS.
it's a multi function relay that replaced the fuel pump relay and the klima relay in those models..
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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]
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  #5  
Old 12-15-2010, 07:41 PM
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It's in the area of the OVP by the battery or is it behind the fuse box with that group of relays?
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  #6  
Old 12-15-2010, 08:53 PM
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Quote:
Originally Posted by Boston Benz View Post
It's in the area of the OVP by the battery or is it behind the fuse box with that group of relays?
by the ovp
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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]
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  #7  
Old 12-16-2010, 12:24 AM
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MAS= Mass Airflow Sensor
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2003 C320 4Matic Station Wagon
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  #8  
Old 12-16-2010, 01:34 AM
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Er, not here.

Quote:
Originally Posted by drbrad View Post
MAS= Mass Airflow Sensor
MAF = Mass Air Flow sensor.

MAS (no idea why it's called that) is a cigarette packet sized box that plugs into the system via a multi-way connector. It is locked in place by a knob on top.

This MAS box does replace the fuel pump relay of earlier systems and is found in later KE-Jetronic systems.

It may also feature in the HFM systems of the original poster's vehicle but I don't know.

RayH
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  #9  
Old 12-16-2010, 09:40 AM
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MAS is commonly used here for Mass Airflow Sensor (as is MAF). MAS needs to be followed by the word "relay" to be clear, and it was.

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