There are lots of potential causes for this sort of behaviour, starting with an alternator that is not working properly or even a body computer that is on the way out. But these symptoms are also a classic indication of a very simple problem; a poor earth somewhere on the car. A modern car has multiple earthing points, and if one is a bit sketchy, it can throw the whole car into chaos. Flickering lights and gauges and warning lights on the dashboard are classic indicators of a bad earth. If that’s the case here, an auto electrician should be able to chase down the fault and fix it permanently.

This generation Ford Focus was the first to use electro-hydraulic power-steering. As such, you can’t transpose the rack and pinion hardware from any other model; it would need to be this exact version of the Focus for everything to be compatible.

Once you’ve swapped the hardware, the electronics would also need to be coded and matched to the car’s body computer, as this is what controls the speed-sensitive variations in the steering assistance as well as functions such as the self-parking facility.

You could scour wrecking yards (as they used to be known) for the bits and pieces you need to replace, but you would potentially be buying parts with the same – or more – wear than the ones you already have. Some things, like rubber belts, globes, tyres and filters, you just can’t trust unless they’re brand new.

Pulleys and their bearings are considered service items meaning they will eventually need to be replaced. When that time comes, the best advice is to replace them with good quality replacement parts, as that’s the only way to make sure the same problem won’t reoccur in a short space of time.

Be wary, too, of really cheap replacement parts you can order online from no-name suppliers. That’s not to say cheap parts can’t be good parts, but quality is sometimes pretty sub-standard and you won’t know that until you’ve paid for them to be fitted and they’ve subsequently failed. And getting your money back from an online seller can be next to impossible in many cases.