1997E320

I saw a tech at a shop reset the light once with the ignition key. He turn the ignition on & off several time & the dashboard went into some sort of diagnostic mode. After that the code was gone. I just replaced a mass air sensor they said would cost me $750 installed. I got it in Texas for $219. Just need to reset light & feel if I go to dealer they'll charge me for that too.

mbtech208

I'm afraid you don't have much of a choice. When a mass-airflow sensor goes bad, it brings the engine's fuel trim adaptations down with it. Once the mass-airflow sensor is replaced, the Check Engine light has to be reset of course, but then the self-adaptation values must be reset as well, or the light will come right back on within a matter of miles.

1997E320

Went to dealer this morning & light was reset.
Thanks For the info..

Hoopty

1997E320.......

Where in Texas did you get the Mass Air Sensor for $219 ?

thanks, Randall

1997E320

Randall, you can go to the following web address
http://www.importecparts.com/

Here's a partial copy of my invoice:

Your shopping cart Contains the following.
Qty Brand Sku Description Retail Price Core Total
1.00 AAA:BOS B3130-85074 Air Mass Meter 373.35 219.95 0.00 219.95
1.00 AAA:BEH G4001-14603 Thermostat Kit 22.00 13.61 0.00 13.61

Core Charges: 0.00
Subtotal: 233.56
Shipping And Insurance - UPG: 0.00
Total Weight (pounds): 1.05
TX residents pay 8.25 %: 0.00
Order Total: 233.56


I bought the air flow sensor & thermostat kit for $234 with no shipping or taxes..

Hoopty

1997E320.......

Wow......they have some great prices

Thanks again.

Randall

delta

mbtech208,

how does one reset the self adaptation value after the mass air sensor replacement? I can reset the codes with my scanner but what you are saying is that I need to bring it in a shop to reset the self adaptation value.

By the way, my car is a 97 E320 with check engine light (code P0170).

Thanks

Delta

1997E320

The adaptation values are reset through the Mercedes Computer or their portable lap version as well. I made a friend in my dealer who now takes care of any situation for me (takes computer home with him).... Good Luck
Fred

delta

Just replaced the mass air sensor but have not reset the fuel trim adaptation value. Does anyone know if disconnecting the battery for a few minutes would reset the fuel trim adaptation values?

Thanks

1997E320......... thank you for the info on importecparts.com. They have a really good price on the mass air sensor.

bcasanova

that mass sensor you bought is the old number,that is why is cheap, the updated number is 0280 218 080, the old bosch number you had I bet was 0280 217 517

1997E320

Got some new news from my buddies shop.. They order a Mass air flow meter for a Volkswagon & swap the sensor inside to your original for $40 Bucks. Its almost 1 AM so I don't know the part number. But if someone really needs this info let email me & I will get it for ya. Eraseram@hotmail.com .

MattB

So if I understand correctly, on a Mercedes you can't just use an OBD2 scan tool to read codes and reset the ECU to clear a check engine light?

1997E320

I've reset my light by just diconnecting the battery & reconnecting after a minute. wORKED for me....

byttcool99

Chris Keane

I have a 1997 E 320 - I washed detailed my car and sprayed the engine with water to clean it. It ran rough after this and today when I went to drive it, the check engine light came on ...and on tachomiter it displays "Engine Electronics" I tried the disconnect battery for a few minutes...did not reset - can this be plugged into a mobile code reader and reset? What can I do?