The 9-speed automatic gearbox of the 2015 SD4 model has a malfunction where it fails to shift gears when it becomes heat
Posted: Mon Jul 01, 2024 12:08 pm
Greetings, everyone.
I own a 2015 SD4 vehicle and it has just had an unusual malfunction.
The automobile has travelled a total of 87,000 miles.
The vehicle operates well while it is in a chilly state, but after it reaches a higher temperature, it sometimes fails to go forward after coming to a full stop at an intersection or traffic lights.
Insufficiently halting at a crossroads and intermittently applying little pressure to the accelerator might result in the vehicle resuming motion. When the vehicle is in the upper gears, it seems to operate smoothly.
When the malfunction occurs, I have attempted to switch to manual shifting using the controls on the steering wheel. The dashboard display will continue to indicate that the vehicle is in a high gear, such as 4th or 5th, even after it has come to a complete stop. It seems that the gear is not shifting back to first gear in order to start again.
Occasionally, the vehicle will completely cease to operate until it has sufficiently cooled down.
I have taken it to the garage for inspection and it has been diagnosed with three fault codes.
The power circuit for the rear sensors is labelled as B1B58-11. The U3000-49 control module is experiencing an intermittent problem. I believe this is the parking assistance module, since it sometimes displays the message "parking aid unavailable" when the vehicle is shifted into reverse.
The U0140-08 code indicates a loss of connection between the vehicle's U0140-08 system and the body control module.
The code U0001-82 The issue at hand is a sporadic malfunction in the high-speed CAN communication bus.
The technician has suggested beginning the process by replacing the gearbox fluid.
I have conducted an extensive online search about the aforementioned problem, but regrettably, I have been unable to locate any relevant information.
I am inquiring if anybody here has knowledge on if the aforementioned defects might be the cause of the problem, and if so, where would be the most suitable starting point to address it. Should I first see an auto electrician or begin by replacing the fluid?
I would much appreciate any suggestions. Thank you in advance.
I own a 2015 SD4 vehicle and it has just had an unusual malfunction.
The automobile has travelled a total of 87,000 miles.
The vehicle operates well while it is in a chilly state, but after it reaches a higher temperature, it sometimes fails to go forward after coming to a full stop at an intersection or traffic lights.
Insufficiently halting at a crossroads and intermittently applying little pressure to the accelerator might result in the vehicle resuming motion. When the vehicle is in the upper gears, it seems to operate smoothly.
When the malfunction occurs, I have attempted to switch to manual shifting using the controls on the steering wheel. The dashboard display will continue to indicate that the vehicle is in a high gear, such as 4th or 5th, even after it has come to a complete stop. It seems that the gear is not shifting back to first gear in order to start again.
Occasionally, the vehicle will completely cease to operate until it has sufficiently cooled down.
I have taken it to the garage for inspection and it has been diagnosed with three fault codes.
The power circuit for the rear sensors is labelled as B1B58-11. The U3000-49 control module is experiencing an intermittent problem. I believe this is the parking assistance module, since it sometimes displays the message "parking aid unavailable" when the vehicle is shifted into reverse.
The U0140-08 code indicates a loss of connection between the vehicle's U0140-08 system and the body control module.
The code U0001-82 The issue at hand is a sporadic malfunction in the high-speed CAN communication bus.
The technician has suggested beginning the process by replacing the gearbox fluid.
I have conducted an extensive online search about the aforementioned problem, but regrettably, I have been unable to locate any relevant information.
I am inquiring if anybody here has knowledge on if the aforementioned defects might be the cause of the problem, and if so, where would be the most suitable starting point to address it. Should I first see an auto electrician or begin by replacing the fluid?
I would much appreciate any suggestions. Thank you in advance.