Access to DCM antenna wiring is surprisingly easy

It looks like the DCM module is pretty much the same one as on Tacomas and 4Runners, only the mounted location is different. All other tricks and caveats mentioned in other forums will also apply to the tundra. I'll focus on the location of the DCM module and how to get access to it in this thread. I suggest taking a look at the tacoma thread before digging further or making any mods.

The DCM module is located right above the OBD port, behind the panel that holds all the buttons and switches to the left side of steering wheel. Getting access is as easy as pulling the panel holding the switches outwards towards you, pop it open, and then you can reach the DCM antenna wirings by hands.

I found this amazing video from Yoda Xpedition that shows how to pop that panel open (at 3:46). The video is about installing an light bar but it needed to pop open the same panel to install a switch.

Here are the close ups:

Once the panels pulled open, it looks like this: (I took the side panel out to take pics, it's not necessary to access DCM)



That "blue, grey, white" plugs in the red circle are the antenna cables:



There's a small plastic clip to the left of each plug, you have to squeeze to pull the plugs out.





According to TIS docs, the blue & white plugs are for cell, and grey middle plug is for GPS:



Once these antenna plugs are pulled, my truck pretty much stays offline, and the satellite icon on the screen appears to be greyed out:



However, pulling the plugs will making DCM reports error codes to the truck. Tho non of the codes is critical.

After reconnecting the cables, DCM may not function until a "activation" procedure is completed: start the truck, put in drive, stop and park, then restart.

 

Thank you