DamianH

Ah-ha!

Got the multimeter out today and patiently pinged everything through. Upon doing so, I discovered that in turning the headlight over I had foxed myself and swapped out the high beam Bulb instead of the low beam. I hadn't thrown the old Bulb away - because I thought it looked like a good one - so I just reversed my error and swapped the real blown Bulb. 

Crisis averted! And some kind of lesson in hubris; it will teach me not to claim I can change a bulb again. 😉

I also use a little bluetooth gadget powered by the cigarette lighter and with a 3.5mm audio jack that I connect into the aux port with a jack-to-jack lead. Works fine.

Great to know, thanks for sharing!

O Learned Denizens, only my second post to your hallowed halls so please go easy on me.

2010 XF with halogen H7 headlight bulbs. Right hand failed a few months ago and I changed it without incident, apart from cursing the person who signed off that delicate tab on the top, which was pre-fractured of course. So I am notionally capable of changing a Bulb.

Left hand just failed, replaced the Bulb, no joy. Reading in the manual I see there are no fuses but instead a Field Effect Transistor protection.

So now I am baffled what to do next. Any pointers?

I'm OK with a multimeter but I need to know physically where I am pointing the multimeter and what a happy multimeter looks like.

First post in here, I may be needing some help from time to time...

2010 Jaguar XF 5.0 naturally aspirated. My second XF since I had a 2009 4.2 when I lived in America. This one seems like twice the car that was and I'm really enjoying it. I found it about a year ago with 42k miles on it. It's a really great long distance car - I recently drove from Staffs to Dundee and it was an easy journey, heavily embellished by a broadly deserted A702 in the middle of it.