X150 roof not working

X150 roof not working

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a8hex

Original Poster:

5,830 posts

223 months

Wednesday 23rd June 2021
quotequote all
OK, I cocked up.
I managed to leave the door ajar and flattened the battery.

Now the roof won't open. Nothing happens when try the switch.

I know that if the cover in the boot isn't in the right place the roof won't work, but then you get a clear message on the display.
Has anyone else had this issue, should there be a message on the display if the reset procedure is required?
I've read various postings from other forums where people have followed the reset procedure to no avail. Some have made the mistake of then going to the dealers who immediate diagnose that the control unit needs to be replaced. Of course a few weeks before this I'd told the Jaguar extended warrantee people to go away in jerky movements since the car is now over 10 years old, so they want well of a grand for a years cover that only provides 3 grands worth of cover for any single visit, suggesting that Jaguar's faith in their product isn't that high and they're giving a one in three chance of something expensive going wrong. But that's another point.
The suggestion I've seen online suggests that when the reset doesn't work try disconnecting the battery, counting to ten and plugging it back in again. I.E. it's not really a car but a computer on wheels and needs the sort of reboot it can't argue with.
Any suggestions? Any else to be aware of before I try things this weekend?

reddiesel

1,956 posts

47 months

Wednesday 23rd June 2021
quotequote all
a8hex said:
OK, I cocked up.
I managed to leave the door ajar and flattened the battery.

Now the roof won't open. Nothing happens when try the switch.

I know that if the cover in the boot isn't in the right place the roof won't work, but then you get a clear message on the display.
Has anyone else had this issue, should there be a message on the display if the reset procedure is required?
I've read various postings from other forums where people have followed the reset procedure to no avail. Some have made the mistake of then going to the dealers who immediate diagnose that the control unit needs to be replaced. Of course a few weeks before this I'd told the Jaguar extended warrantee people to go away in jerky movements since the car is now over 10 years old, so they want well of a grand for a years cover that only provides 3 grands worth of cover for any single visit, suggesting that Jaguar's faith in their product isn't that high and they're giving a one in three chance of something expensive going wrong. But that's another point.
The suggestion I've seen online suggests that when the reset doesn't work try disconnecting the battery, counting to ten and plugging it back in again. I.E. it's not really a car but a computer on wheels and needs the sort of reboot it can't argue with.
Any suggestions? Any else to be aware of before I try things this weekend?
There is I know a top reset procedure in the manual , have you tried this ? My advice with these older Jaguars is always to find a good Jaguar Independent local to where you live , like resetting the electric seats its 10 minutes on the Computer , I will be stunned if something expensive has gone wrong .
As regards the hard reset by disconnecting the Battery , it may or may not solve your problem , I would certainly give it a try .

a8hex

Original Poster:

5,830 posts

223 months

Thursday 24th June 2021
quotequote all
reddiesel said:
There is I know a top reset procedure in the manual , have you tried this ? My advice with these older Jaguars is always to find a good Jaguar Independent local to where you live , like resetting the electric seats its 10 minutes on the Computer , I will be stunned if something expensive has gone wrong .
As regards the hard reset by disconnecting the Battery , it may or may not solve your problem , I would certainly give it a try .
Thanks,
I know there is a procedure in the manual, I've not tried it yet. I was being lazy and wondering whether there was any message on the display that said whether the top needed reseting this way. Diagnostic messages from computerised systems are always "a good plan" biggrin.
My comment about the dealer was me being sarcastic. The dealer tending to want replace the control module rather than just power cycle everything.

What with me being lazy, the option of pulling the lead from +ve terminal of the battery looked easier than hand cranking down the roof and then putting it back up again. It was also less likely to result in me with a car with the roof stuck part way, or with the top catches refusing to lock.
I didn't have to reset the roof when I changed the battery on the car, so it doesn't seem that the reset is always needed. There is also a reset procedure for the windows to reprogramme them to know where the top and the bottom positions are, the car doesn't seem to have lost this so I don't seem to need to reset the windows this time, I didn't when I changed the batter either.

a8hex

Original Poster:

5,830 posts

223 months

Friday 16th July 2021
quotequote all
OK, finally found some time to take a look at it.
It occurred to me that pulling fuses for the circuits for the roof might be easier than disconnecting the battery as I was pretty sure it was going to be an electronics needing a reboot problem.
All three fuses for the roof at in the fuse box behind the middle panel between the rear seats.
The obvious one to go for was F8, the 5amp fuse for the roof logic module, that didn't clear it, so I then checked F30 (Power roof rear quarters, 40A) and F32 (Power roof supply, 40A). I didn't check whether the roof was working between these two, but having pulled them, checked they were OK and stuffing them back in, the roof now works fine.
I'm glad to having it working again now that we've got some sunny days.