2013 BMW X5 Valvetronic Faults
I had an X5 in today. The MIL was not currently on, but it had Valvetronic faults stored. Client states that when she parks the vehicle on any kind of incline for an extend period of time the MIL will come on at the next start up and the vehicle will have low power. I cleared codes after first scan and the 2D41 'Valvetronic Adjustment Range Master Adaption Outside Tolerance' and 2D43 'Valvetronic Fault Range Check' do not clear. The test plan has you perform the Valvetronic Running In procedure. That procedure fails with a message to replace the Valvetronic Servomotor, VTC eccentric shaft and the oil spray nozzle. Visually inspected wiring to the servomotor. I have a few thoughts/questions for you all.
1. I want to make sure I am not overlooking anything before recommending this repair.
2. I am not sure what parking on an incline could have to do with this fault.
3. I remember reading something about possible driver damage in the DME when the Valvetronic Motor fails?
Thank you in advance for your time/thoughts.
To Check driver I would check current on 1 of the 3 phases . if you have current then i would say the driver is good. i Picked that up from one of Seth Thorsons classes. highly recommend his classes
Have replaced valvetronic motor and shafts. Also have seen bad IVM which sits in plenum. Wonder if water is sitting in plenum well from stopped up drains. Just a thought.
Check the eccentric shaft sensor. Pull the connector and see if there is any oil on the pins.
I’ve been burned there. Changing valve cover in a rush. Lesson learned
This engine has the third generation valvetronic. The sensor is built into the servomotor. The older designs had a separate sensor with oil leak problems.
Check power and signal from dme to valvetronic motor, i had same issue and i also had used valvetronic motor, i pluged on and tried to actuate it using tool it never did so i had bad DME.
I don't think this is the same setup on the N55 engine but we have a post on our forum regarding the N13 Valvetronic motor and how we applied Pico to better understand what was going on. It might help if you need to clarify something. picoauto.com/support/topic2… Sorry if adding links isn't the right thing to do but I can't really copy the whole thing over! If this isn't allowed…
Thank you Ben (and Steve for the write up)! Definitely helpful.
As far as checking the DME ability you can current ramp the 3 control wires individually. I believe they should be close to 15 amps at your max reading. Your just checking to see if the driver can provide enough current. To do this just let the vehicle power down completely then ignition on - the DME will attempt self test on circuit always. Check over the wire harness between the valvetronic…
I was just reading the full list of codes this car has. There are codes for mixture adaptation and maf reading. You are doing well to approach this repair carefully. Scope the current with an amp probe as others have said. May be the motor is faulty. Also investigate the service history of this car and when the last oil change was performed. Make sure this engine was taken good basic care of.
Thank you gentlemen! Today was a little hectic and I haven't had a chance to reply till now. I scoped each of the three motor wire at Key On (letting the car power down in between key cycles). Each of the wires had 60 plus amps on them for about 3 seconds. That seems high to me, but this is the first time I have scoped one of these motors. I am thinking this is pointing towards a stuck eccentric…
Sorry I missed this post; hope its not too late. I have had to replace my fair share of eccentric shafts and motors on these 3rd gen valvetronic systems, they do wear out. I have to say that now I always scope all three phases together. Reason is I have ran into TWO fautly DMEs' where each of the driver's flowed current, but they all flowed current at the exact same time! I don't know how or why…
Thank you for post, it's never too late to learn! The owner of this vehicle wanted us to install aftermarket parts that she purchased, so we had to politely decline and she has taken her vehicle. I only have one amp clamp so I scoped the phases individually, but even individually they all looked identical. I wonder if all three were pulsing together like you have experienced. Since the vehicle…