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745Li

Hello. It's quite possible that there is no one at fault here. It may just be unfortunate timing. I'm assuming that you have had the codes read (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau) and that is why you have decided you need to replace the...

It is very possible that transmission damage could have occurred when the transmission overheated. This can only be determined usually by removing the transmission and checking all parts thoroughly. In this situation I would recommend having a transmission inspected by...

The crankshaft sensor is located on bottom right of transmission bell housing.

Hi there. Essentially, the P0365 code means (https://www.yourmechanic.com/article/p0365-obd-ii-trouble-code-camshaft-position-sensor-b-circuit-bank-1-by-valerie-johnston) that there has been a lack of voltage detected from the camshaft position sensor B in bank 1 by the PCM within a few seconds of the engine starting. The camshaft position...

Hello - you don't mention the specific problem codes you are getting, but the problem you are having may not be the cam sensor itself (https://www.yourmechanic.com/question/car-is-running-fine-somewhat-but-have-p0345-code-cam-shaft-position-sensor-by-kerry-a). Rather, the problem could be the "v-shaped" timing chain guide between the cylinder banks....

Hello and thanks for contacting YourMechanic. The trigger for your ignition system lies within the computer system. Your computer is not allowing the ignition to trigger the power. The coil should have power to it and a ground wire. The...

Hello there. With any Check Engine Light, the first step is to have the code read to determine what system is involved with the fault. It is possible that this fault was caused by the vehicle losing power when the...

Hello. It sounds like your 2005 BMW 745Li may have a problem with your electric/charging system or that the battery is faulty (https://www.yourmechanic.com/services/battery-replacement). If the electric/charging system is charging too low, it will cause the electronics to go “haywire” because...

Hello. There are two motors for the steering column features in your 2005 BMW 745Li. It is possible that the motor for the tilt feature is faulty or that a fuse or relay has blown to prevent the power steering...

Hello. It really depends on the overall condition of the vehicle as to whether or not it will make that drive. Replacing the spark plugs is a good place to start maintenance, but I would definitely check all of the...

by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark...

Hello, thank you for writing in. The first thing to check is the installation. Make sure the power supply was hooked up correctly, as LEDs are polarized and must be wired perfectly. Secondly, you want to make sure the wires...

There may be trapped air in the cooling system. Air can get trapped if you drain coolant and then refill the system without purging. Trapped air can cause overheating by blocking coolant flow and can also faulty heater operation. Other...

Hi there. The computer (ECM) is locking out the transmission from engaging a drive mode. When this happens, something inside the transmission has failed, like a solenoid or the pump pressure is low. Check the transmission fluid and make sure...

Your car has an electronic throttle motor, which opens the throttle when you step on the accelerator. It's possible that the throttle is not activating with the pedal. A problem like that should be accompanied by a check engine or...

In order to determine if your SBSR is faulty, a factory scan tool is needed. There are a couple of technical service bulletins (https://www.yourmechanic.com/article/how-to-use-a-technical-service-bulletin-by-parker-hill) about low fuel, the fuel transfer pumps and reprogramming the SBSR module. Check with your local...

Hello there. This is not an uncommon fault with a BMW 745Li. With any complex electrical system, the first thing to do is the perform a load test on the battery, as proper voltage is important for how the entire...

Hello. Your BMW 745Li has a shutdown feature which helps to prevent additional damage to other components of the car when there is a problem with the engine and/or transmission. Using the information that you have provided, it sounds like...

Hello. The valve cover and the spark plug tube seals may be leaking oil causing the blue smoke you see coming from the tail pipe of your 2004 BMW 745Li. The valve cover gasket and spark plug tube seals are...

If all of your concerns began after the battery was replaced then it sounds like the battery may not have been installed correctly. The battery is the main power source that powers the entire vehicle on startup. If the battery...