TargetDan

They are pretty tight if I recall. Think I resorted to pliers and somehow levering the mechanism so there was less distance required to hook it on.

check the battery too - low battery can cause all sorts of warning messages to pop up

There are a few compatible fluids, you have to make sure they are the right spec though to protect the box. Ravenol seems to be popular at the mo, or direct from shell i think. Check out this post on another forum - loads of research has been done on the subject: https://www.jaguarforum.com/showthread.php?t=81862 HTH 🙂

If the airbag light flashes it is giving you a fault code. Long for the first digit, short for the 2nd digit. So one long flash and 9 short flashes means code 19 which is fairly common - drivers airbag / clockspring. The code is repeated 3 times. See what yours is and then google airbag fault codes for a list.

I had code 19 flashing at me shortly after I bought my S type. Its definitely airbag/clock spring related as you say. Bet my seller thought there was a serious problem and wanted to part with it, but in reality i just took the clock spring out and cleaned all contacts with wd40 - no issues for 18 months now! As Lazlo said, I would check every single connection point and clean them up. Its a common area for dirty connections. Dan

Does the fan kick in when the engine gets hot? Could be seized if it only happens when stationary.

Glad you found the part - all sorted now?

I did mine a few months ago. Fairly easy although there isn't a lot of room to get your hands in there and yank the old tank out! I suggest draining the system first or you'll have coolant gushing everywhere. Most important tip is to check the clip on the bottom hose when fitting the new tank - can look like its on properly but if it isn't it will ping off under pressure! Dan

Check your battery voltage. A slightly low voltage might cause all of these symptoms. Check it when cold, think it should be at least 12.45v

Hi Liam, would you mind pm'ing me his number? Seems like a good price and I may need 1 soon! Thanks, Dan

Check the top hose barb on the coolant tank isn't leaking - common to snap and you'll have orange coolant around the black rim of the tank.

It's equivalent to taking a priceless painting and shading parts of it with a marker pen. Why?!

Also check the coolant reservoir - they sometimes crack and leak, or the top hose nipples are easily broken so you will have orange gunk around the top rim. People recommend replacing the reservoir if that's the case. Dan

No drips to speak of and no water on oil filler or dipstick. Yeah I plan to try fixing the nipple on the reservoir and if it doesn't hold just replace the whole unit.

Lovely thanks guys I will look at that next weekend.