[Teeth]

Hi guys - new member, first post.
Im sure this must have been discussed before however I can’t fibd anything specific to my car, 2011 tdv8 4.4 the top boot has suddenly decided to not open- no noise when smart key button pressed, no noise when interior button pressed. Am I right to assume the top switch or is it likely to be something else? Thanks in advance

 

[RRToadHall]

It doesn't need to be specific to you car, L322 hatches are all pretty much the same. Have you checked the fuse? You mention the remote button and interior button not working. What about the the hatch button in the hatch lip? If all else fails you have the emergency release in the rear. This will give you access to inspect for anything jamming the latch which may cause the fuse to blow. Last option I can think of is that the connector for the release solenoid has come unhooked from years of being jarred from closing the hatch.

 

[MARK_C]

The BCU provides the voltage/current to open the top glass, there is no separate fuse, or relay its just an output signal from the BCU module straight to the latch motor, and then to ground.

 

[RRToadHall]

Thanks for the clarification.

 

[Teeth]

Ah -even when I unlock the car there is no sound from the boot

 

[RRToadHall]

okay... so use the emergency release. You can then pop the trim off and see if the solenoid has come unplugged or the connector is corroded. If you have a battery charger you can carefully power up the solenoid to see if the solenoid has failed.

 

[Teeth]

I have managed to open using emergency release. I assume I can use battery charger on either terminal?
Thanks

 

[MARK_C]

Yellow wire with brown trace (terminal 1) is hot, brown wire (terminal 2) is ground on the connector at the motor/solenoid. This is from an 06 wiring diagram. Ground connection is at C0555-0 which is mounted to the right rear inner wheelwell behind the rear compartment trim panel closest to the rear seat (there are two ground connections there C0555 and C0706. Again this is from an 06 wiring diagram. Check your ground connection as well, especially if your rear lower door release button is intermittent , or doesn't work.

 

[RRToadHall]

With two terminals, you need black on ground and tap the red to the power feed.

Do you happen to have a test light? You can put the test light probes in each of the harness slots to check the power signal from the master switch.

EDIT: Whoops. I miss the old cross posting warning! :lol: