Greetings, everyone.
I seek assistance from someone. Due to heavy rainfall causing a river in our hamlet, my wife borrowed the X5 for the day. The water depth was around 12 inches, as indicated by her description. She was operating the vehicle at a much reduced speed. Everything was going well until around the midpoint of the deluge, at which point several lights suddenly illuminated. Warnings for ABS, Dynamic Stability Control, and Electronic Handbrake. The car was still able to drive back home.
The scanner displays the following issues: some disappear after resetting, but reappear after driving.
The VTG (Transfer Case) is experiencing a line disconnection issue with terminal 30b in the 520D Transfer Box. This is related to the CF80 component. Engine management system has received a signal requesting a certain torque setpoint.
The transfer box (VTG) is experiencing a malfunction with the servor motor in the load circuit.
5215 Transfer box (VTG): Internal Control Unit malfunction (software reset)
5216 The PWM unexpectedly deactivated. 5222 Deactivate the control unit of the transfer box (VTG) in its entirety.
The user's text is "522A". Transfer box (VTG): Internal Control Unit malfunction (software reset)
ABS/DCS (Dynamic Stability Control) is referred to as D36A. No message received from the transmitter with the identifier VTG and the hexadecimal value 0xBC. The receiver is DSC and the transmitter is VTG with the hexadecimal value D36B. No message received from the transmitter with the identifier VTG and hexadecimal value 0x376. The receiver is DSC and the transmitter is VTG with hexadecimal value 5F3A. Transfer Case: Dysfunction
ECM/DME/DDE refers to the Digital Motor/Diesel Electronics system. The 4C3C message with code (SOLL_MOM_ANF, 0xBB) indicates a fault. Additionally, there is a LIN bus communication fault with code 49A6.
The electro-mechanical parking brake is experiencing an issue with the EMF DSC interface, specifically a signal invalid error.
It seems likely that water entered an area where it should not have, given the automobile was in good condition before being driven through water. I have removed the lower covers of the automobile and inspected the connection on the servo motor located on the transfer case. Although I seemed to be dry and clean, I decided to apply a coat of electrical cleaner/lubricant (a specialised product, not WD40) as a precautionary measure. I have thoroughly inspected the boot and ensured that no water has into the surrounding electronics, since I have come across information suggesting that this is a potential issue. Once again, everything seems to be in good condition and dry, despite the fact that everything has been left untouched for a few days before to my examination. The 4x4 system is completely non-functional since the front wheels remain disengaged at all times. The parking brake functions properly while the vehicle is not in motion, however it fails to engage when the vehicle is in motion. It is expected to perform well at depths of up to half a metre, and I have certainly used it in deep water without encountering any problems.
Do you have any suggestions on the next steps to investigate or the potential cause of the issue? I'm optimistic that the issue is only the presence of water, since everything was in good condition before becoming moist. I really dislike the notion of returning it to the BMW dealer if I can avoid it.