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745i

Hi Tevin. Thanks for contacting us tonight. If you can engage the starter (meaning it cranks over) but will not start, then it's either a fuel or ignition system failure. Some of the common components that can cause this include...

Hi, thanks for writing in. A faulty mass airflow sensor can certainly effect power, performance, and economy. If the engine computer does not read the mass airflow or any other sensor, it relies on basic settings to run. It does...

Hello there. Thanks for writing in about your 2003 BMW 745i. Many different faults can cause the vehicle to have bounce like this. The most common would be front struts (https://www.yourmechanic.com/services/strut-assembly-replacement), springs (https://www.yourmechanic.com/services/air-springs-replacement), tire balance, or a suspension arm. I...

Hello. The variable intake should reset once you put everything back together and run the engine. If the intake flaps are stuck, then there may be debris stuck in them from carbon build up, or the motors may have been...

Hello. This happens al lot on this vehicle. The problem is typically the turn signal switch assembly. The switch contact fail internally and cause this to happen. I typically check the voltage at the switch first to verify that it...

Transmission Failsafe means that the transmission controller has detected a problem with the transmission or any of it's sensors that is preventing it from working properly. In your case it seems to see a problem when you attempt to get...

The code you listed, P1727 indicates that the engine speed sensor (https://www.yourmechanic.com/services/speed-sensor-replacement) is not providing a signal to the computer. Without knowing the position of the crankshaft, the ECM does not know when to inject fuel or when to ignite...

Hello there. This sounds like there are a few different things going on. The temperature warning and the water pump were most likely related occurrences. The power steering could've also gone out if the belt that powers the power steering...

White smoke while idling is normally reason to believe that your BMW may need the valve stems replaced, however this can also be the sign of bad Crankcase Ventilation (CCV) gaskets. On top of those possibilities, there are many things...

Hi there. An inspection of the radiator for white residue will be necessary. Radiator leaks generally occur where the plastic side tanks are mated to the sides of the aluminum radiator core. If this is the case, the radiator will...