My W163 keeps having a rough start, then dies right after for a few times. And when my car is rolling, it hesitate to go when i step on the gas pedal from a complete stop. i already replace the fuel filter and Mass Airflow sensor, but its still doing the same issue. i ran a diagnostic test and it keeps saying its the IAT sensor. Plus, i don't see where thats located. help please?

 

Post the codes

 

i fixed most of the code issues, but i can't seem to find the issue of the P3500 fault code.

 

that's not a valid code