takemorepills
Well-Known Member
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How to Stop/Disable Nissan's data reporting how you drive where you are and all other Usery information?
citrus
Well-Known Member
Following up on this, I disconnected my TCU today. I used these guides:I found the telematics communication unit (TCU) location and its antenna. The telematics and GPS antennas share the same connection to the TCU. You can find this diagram on page 433 of this section of the service manual.
The AV unit must be completely removed from the dashboard to remove the TCU itself. They connect to each other by USB. The mounting method is the same for cars both with and without navigation (page 343).
This is the routing of the TCU antenna cable to the TCU, found on page 438 of the same section. The plug to the TCU may be reachable by removing the glove box and the surrounding trim piece. Each half of the antenna is attached to the underside of the dashboard by one screw.
Additional removal instructions follow. The center air vents and lower trim around the AV unit must be removed first, as detailed in this section.
I don't have access to my car right now, so I can't test these procedures myself, but I hope someone else in this thread may find this useful.
In the second video, there are two notes:
- 2:20 the HVAC controls section holds down the leather trim above the glovebox, so it's best to remove the HVAC controls first
- 2:47 the panel under the steering wheel doesn't leave much space to remove the other trim, so it's best to remove it as well
Aside from those points, the TCU can't be removed completely. The big blue plug must be plugged in for the head unit to function as normal.
The cable with brown plugs connects the TCU to the head unit, and can be removed completely. This is the most sturdy mini USB cable I've ever seen.
The plugs for the antennas are very loose and can rattle very easily. I chose to secure the plugs and their cable with fabric tape to the other cable coming down from the same location.
The TCU contains a lithium ion rechargeable battery. I assume this allows the TCU to communicate at all times. It can be removed without affecting the functions of the head unit.
After disconnecting the TCU, the car can still receive GPS signal as normal, so the built-in navigation system still works. I drove the car for a while afterwards and no fault codes appeared.
Last edited:
takemorepills
Well-Known Member
Thanks for sharing, more people should do this.Following up on this, I disconnected my TCU today. I used these guides:
In the second video, there are two notes:
- 2:20 the HVAC controls section holds down the leather trim above the glovebox, so it's best to remove the HVAC controls first
- 2:47 the panel under the steering wheel doesn't leave much space to remove the other trim, so it's best to remove it as well
Aside from those points, the TCU can't be removed completely. The big blue plug must be plugged in for the head unit to function as normal.
The cable with brown plugs connects the TCU to the head unit, and can be removed completely. This is the most sturdy mini USB cable I've ever seen.
The plugs for the antennas are very loose and can rattle very easily. I chose to secure the plugs and their cable with fabric tape to the other cable coming down from the same location.
The TCU contains a lithium ion rechargeable battery. I assume this allows the TCU to communicate at all times. It can be removed without affecting the functions of the head unit.
After disconnecting the TCU, the car can still receive GPS signal as normal, so the built-in navigation system still works. I drove the car for a while afterwards and no fault codes appeared.
GPS should work just fine
has it's own antenna.Ok, new one for me, I didn't realize there's a battery back there! Glad you pointed that out, I wonder if there's one in my Titan also.
Lithium ion batteries can self ignite, if it did, your car won't survive. Now there's two reasons to get after it!