Mercedes A Class A140 ECU & Air Mass/Flow Meter change help

**super jumbe** · 21st April, 2013, 08:09 PM

I have got Mercedes A140 been diagnosed as having a faulty air flow sensor, unfortunately the mass sir flow sensor and engine control module are both connected together.

I want to know how I programme ECU to match with transponder keys to start car, got another one from scrap yard but the car will not star.

Thanks in advance please help.

**smayer** · 21st April, 2013, 08:58 PM

You Can replace 2 glass air mass blades.

**super jumbe** · 21st April, 2013, 09:11 PM

Originally Posted by smayer

You Can replace 2 glass air mass blades.

Thanks for quick reply, how do I replace mass blades do I take them out from the new 1 and replace to the original unit. Do you have any photos?

**mavi** · 21st April, 2013, 09:28 PM

Hello

here you have what you need .

Mercedes A-class air-mass (airfow) sensor

repair

Bert Rowe's-Mercedes-Benz 'A'-class info. Mass Air Flow/ECU problems and the alternative to purchasing a new unit costing ?1200.00 + Fitting from Mercedes-Benz, Special discounts available to readers of this site on guaranteed repairs.

regards

**ominimicu** · 21st April, 2013, 10:10 PM

immo is in 29f200...you can swap the flash to the scarpyard ecu...i believe is worth a try rather than all that complicated stuff.

anyway credit to these awesome poeple for finding the info

**super jumbe** · 21st April, 2013, 10:45 PM

Originally Posted by ominimicu

immo is in 29f200...you can swap the flash to the scarpyard ecu...i believe is worth a try rather than all that complicated stuff.

anyway credit to these awesome poeple for finding the info

Is this a tested solution, because it?s not an easy chip to solder??

Thanks for your time.

**wsc** · 22nd April, 2013, 01:37 AM

just read whole the flash from the 29F200 and paste into the used

**ominimicu** · 22nd April, 2013, 01:38 AM

that too hehee didnt thought of that. And it s easy to desolder it takes 30 secs

**super jumbe** · 22nd April, 2013, 06:32 AM

Thanks mate I will have a go tomorrow, I will keep you posted.

**juzzac** · 7th May, 2013, 12:32 PM

Hi Mavi,
Do you need to calibrate the new sensors to the ecu? I have read some that you have to solder in a resistor to calibrate the new sensors ? or can this just be reset with Star??

**radioman** · 31st May, 2013, 08:56 AM

Only Experimental Solution repair air flow meter A class 140.Remove original air flow meter and drill a hole in the opposite side and mount a air flow meter code 06A 906 461B four pins +12v,GND,Signal.Tested 2 cars.Adaptive Reset value.It pop out of the airflow and the engine is tested whether changes.

**antibisic** · 31st May, 2013, 01:09 PM

Originally Posted by radioman

Solution repair air flow meter A class 140.Remove original air flow meter and drill a hole in the opposite side and mount a air flow meter code 06A 906 461A four pins +12v,GND,Signal,temperature sensor.

have you the pic from this?

**omglol** · 23rd June, 2013, 11:52 AM

I have same car with same problem in garage ... if I order new glass sensors from codecard and change them, is there any other way to reset ECU beside DAS/Star? I have DAS/Star working via AVDI, but I can only diagnose cars on CAN-BUS, while this one is on old K-line.