Allroad has "slammed" itself.

[Solent muppet]

Ayoop, it's that bloke again. As per the title,  my Allroad has decided that I didn't have enough street cred and has helpfully decided I would look SO much cooler driving a (very much!) lowered car. I had noticed that in the past couple of mornings,  she looked a tiny tad lower on the o/s/r but came up just fine after the (mandatory in my view, with 223000 miles)1 minute warmup prior to moving off. She was fine yesterday but today I pulled off the drive and as I hit the second speed bump in the village at about 15mph she felt suddenly quite hard at the front.  So I took things easily until the third speedbumpwhen I realised the suspension was now rock solid. Turned round and parked up. Wow, the front is lower than a 1970s Citroën CX with knackered spheres, but the back end is just slightly down.....so at this age am I looking at a) new front struts, b) a new pump or c) wow how lucky is me, it's just an air supply line popped out. Your thoughts would be most welcome at this juncture, thanks in advance. Ps, she had been sitting for a little over 3 months till the end of April with a non functioning wiper mechanism and a detached bonnet release cable (shudder!) but that's now sorted (shudder again!).

[Steve Q]

Id recommend a diagnostic check to see if any fault codes flag up but I'll bet it's either an issue with a leaking suspension airbag, failed air compressor or air compressor relay. 

[Solent muppet]

Well cheers mate.....I've been umming and ahing about getting a diagnostic tool for this but have no idea which one to get. Bearing in mind the age of the car and its value I'm wondering if it'll be worth buying one. Which model would you suggest and how much might it be.....I'll sit down before you reply.....🤑