how to fix P0700 transmission control system malfunction in Volvo XC60 First Generation (2008-2017)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Raise the vehicle securely on jack stands.

2. Transmission Fluid Change

1. Drain Fluid:
   • Locate the transmission fluid drain plug.
   • Use a socket set to remove the plug and drain the fluid into a suitable container.
2. Replace Filter (if applicable):
   • Remove the transmission pan by unscrewing the bolts with a socket set.
   • Carefully lower the pan and remove the old filter.
   • Install the new filter, ensuring it is securely attached.
3. Reinstall Pan:
   • Clean the sealing surface of the transmission.
   • Replace the gasket if necessary.
   • Reattach the pan and torque the bolts to the manufacturer’s specifications (typically around 10-12 Nm).

3. Repair/Replace Transmission Control Module (if necessary)

1. Remove TCM:
   • Locate the TCM, which is usually mounted on or near the transmission.
   • Disconnect the electrical connectors carefully.
   • Remove the mounting bolts with a socket set and extract the TCM.
2. Install New TCM:
   • Position the new TCM in place and secure it with bolts.
   • Reconnect the electrical connectors ensuring they click into place.

4. Refill Transmission Fluid

• Use a funnel to fill the transmission with the correct type of fluid specified in the owner's manual (usually ATF).
• Check the level with the dipstick and add fluid as necessary.

5. Reset the Engine Control Module (ECM)

• Reconnect the battery.
• Use the OBD-II scanner to clear the P0700 code and reset the ECM.