Top 20 2014 BMW 3 Series Questions & Answers

Air flow sensor could be a problem.
Every time EML comes on the car computer will put the system into limp mode. To avoid any further damage to the engine.

once switch off, isolated and re-start will re-run the program and clear it temporary.
Ideally you need to get the car plugged in to a Diagnostic computer and see what fault code are stored.


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Check if happening at specific settings on the fan. Fans use resisters to slow down their speed. Typically the lowest setting will mess up before the highest. If coming a going means you change the speed and it goes away.

If it doesn't matter what speed, there is probably something in your vents. Do you park outside? Mice love getting into warm cars on cold nights, and build nests... a nice comfy place can be in vents...

Or have very small kids... mine used to love putting things in the vents and have them disappear! Could be cherios

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no , neither am I
no manufacturer will release a substandard vehicle
check for broken exhaust pipe flex section near the manifold and a failing cat converter blocking the exhaust system

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check the fuel regulator valve it may that solve your problem.

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On this website you find fuse box diagram and description for BMW 3 series (E90)

BMW 3 Series E90 E91 E92 E93 2005 2010 fuse box diagram Auto Genius

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You have to reach your hand in under the center of the hood, then feel for a small handle and lift up on it. Then hold the handle up while lifting the hood at the same time.

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Check fuses under the hood.

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P0700 is an informational code only. It doesn't point to a direct fault in the engine, only a general fault in the transmission.

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Sounds like your battery is weak. BMW's don behave like other cars when the battery is weak. The BMW will prevent the starter from engaging, but leaves power to the interior.

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BMW Cars Repair Manual download instant

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get the codes first.

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Check your backing plate or called shield on rotor on that side. Possibly, its bent and rubbing the rotor. This could happen during brake work.

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new one on me this. I would suggest you disconnect the battery for 24 hrs to let the ecu etc reset, but make sure you have a radio code if needed. Then reconnect and see how you get on. You can easily resync your fob by inserting key in door lock, turn to lock and at the same time press the lock button and to unlock do exactly the same.

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Check the fuse first, second check if the wire transmitting the signal is still in one piece.

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blower relay will be near or in the fuse box under the hood. this is most likely the cause, but could also be a short.

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you need to get the remote reprogrammed

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Yes. But most likely its just a broken fan motor.

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