The BMW X5 e70 mass air flow sensor location is found by watching: https://www.Youtube.com/watch?v=wcUiG01Oo2g The spark plugs need to be replaced every 100,000 miles unless it's a copper one. A cooper spark plug needs to be replaced every 30,000 miles. Your air filter needs to be replaced every 15,000 to 30,000 miles. The coolant needs to be replaced every 60,000 miles. You will come across many issues with an engine. A gasket may be loose and that needs to be tightened up. A spark plug may pop off, causing engine issues. A serious problem is the engine overheating. This may lead to fires and the vehicle exploding. There could be excessive oil use, requiring the oil to be changed sooner than expected. You can have oil leaks and those need to be repaired as soon as possible.
The MAF sensor is mounted on the far side of the air duct that lies near the fire wall in the center. It connects the air filter housing on the right with the intake manifold on the left as you stare at the engine with the hood up. Take the whole middle air intake duct off - it makes it much easier to disconnect and unscrew th old sensor. Please know that if yiou have turbo, you also have a MAP sensor (not to be confused with the MAF sensor). This is easily seen on the turbo air intake duct on the right near the back. Look for your coolant reservoir and then look to tey left of it. My issue was the MAP not the MAF for rough idling and RPM inconsistencies. The MAP is about half the price ($65) of the MAF. Be sure to buy German made only - Bremi, Hella or Continental (EOM$)
Steve M
July 30, 2020
The BMW X5 e70 mass airflow sensor is mounted in the air duct between the air filter housing and the throttle body.
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