You should be able to see a yellow tube when looking at the front of the engine, left of centre (maybe it's not yellow on your 01 model).
Thanks Paul, it's SWMBO's car, and she's away for a couple of days, so I can't check at the moment.
I must admit I've not been very happy about not being able to check the
manually, but having said that, I can't imagine, even though I'm a bloke, I wouldn't have checked with the handbook when I first realised I couldn't find the dipstick. All the other fluids etc are checked regularly.
I will report back!