How to Replace Mercedes Ambient Air Temperature Sensor | ML350 Example | P0073 error code
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Error code: P0073
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I hope that you have recovered well from covid, Keith. Perhaps you can help me and others (this seems to happen quite a bit, based on what I've seen in forums) by suggesting a solution for my current problem on this. My original sensor was reading 185F, I had error codes P0073 and P0072, and the AC was not working well. I tested the sensor outside the car and its resistance was 2.8-2.9KOhm. A new sensor that I ordered from Amazon (supposedly OEM, it does have the Mercedes logo on it) was also tested and it showed 2.8-2.9KOhm as well. Both tests were done at the same time, with the same temperature in the room, of about 73F. I installed that new sensor but that did not fix the problem. I tested the sensor's two-wire connector with a PowerProbe and, with the sensor removed it showed 4.5V on one wire and nothing (not ground) on the other; with the sensor installed (either the original or the new one), it showed 4.5V on both wires. Is that wire voltage level and reading pattern normal? What is this sensor's normal resistance level? I am stuck. Either the new sensor was also faulty (can a sensor be faulty and still show normal resistance, if 2.8-2.9KOhm happens to be normal?), or it is something else. The battery charge and alternator function were both checked and are normal. Any thoughts? If I need to check the connection of the wire that comes from that sensor, where does it go? TIA
Will this make my check engine light turn on?
I have 2008 ML350 4MATIC, it was involved in an accident and the bumper and gill were charged. I can't locate anylonger the Ambient temperature sensor. Kindly help out.
Or, spend $3,000 at a Mercedes dealer…. Hmmm.
Hi,very good videos for my r350 MB.
hello ai hew e350 2009 dhe problem it's dhe ac stey on every time same time stay work ventilators
Hey guys!
I just got a used Mercedes Benz A w168 but it seems like the ambient(outside) temperature is faulty. It's always stuck on a certain reading.
I am going to order a replace for it but I have no single idea where it sits on my car and couldnt not find anywhere on the internet about this specific model.
Could you please help me out?
Thanks in advance!
Great job explaining the issue and how to get to the temperature sensor. Just happened on my 2009 ML350. Thanks for the excellent tips….. Ordering one on Amazon tonight 🙂
Donde está el sensor de temperatura ambiente de un Mercedes Benz CLK 350 w209 cabrioles 2009