Autowerx Service LTD

19/10/2026

92,000 miles and this is the state of the air filter.

This X5 M50d came in for a full service, gearbox oil change, transfer box and differential servicing, along with a full health check.

The service history is a bit patchy, and the condition of this filter tells us quite a lot about how the car has been maintained.

It’s not always the expensive problems you need to look out for. Sometimes the simplest things tell you the most.

18/10/2026

This little box plays a big part in keeping your BMW’s high voltage battery safe.

We’ve removed the battery from this G05 X5 after tracing its high voltage faults to a failed safety battery box.

Normally, this unit can disconnect the battery in an accident, but this one has failed internally without the car being involved in a crash.

Once replaced, the battery needs to be reassembled and tested before the car can go back on the road.

16/10/2026

More progress on the BMW 840 and we’ve found the cooling system full of deposits, with the old water pump badly blocked.

The radiator and water pump have now been replaced, but the bigger job is flushing everything out to make sure coolant can flow properly again.

What might seem like a quick fix for a leak can create a much bigger problem down the line.

15/10/2026

13/10/2026

The BMW 840 is turning into quite a project.

One injector is completely dead and replacements are proving difficult to get hold of.

We’ve also removed the cam covers to sort the oil leaks, but found the old paint flaking away inside. The last thing we want is that ending up in the oil and potentially blocking the pickup.

A bit more work than expected, but we’d rather get it right than rush it back together

11/10/2026

10 years off the road and this BMW 840 is finally getting some attention.

It’s running rough, misfiring and throwing up throttle faults. We’ve also found a rat’s nest under the bonnet, so there could be some interesting wiring issues to deal with.

First job is getting it running properly, then we’ll move on to the suspension.

This should be an interesting one to follow.

09/10/2026

This oil leak could have been very easy to misdiagnose.

At first it looked like a leaking crankshaft seal, but after cleaning everything down and removing the pulley, we found a crack in the front timing cover.

Unfortunately, it’s a much bigger repair than expected, but it shows why taking the time to diagnose a fault properly matters.

Better to find the real problem now than replace parts that weren’t faulty.

08/10/2026

Electric cars still need servicing.

This BMW iX came in for its two year service, including a full health check, diagnostics, brake fluid change and cabin filter replacement.

Everything looked good apart from the rear tyres, both down to around 1mm of tread and well below the legal limit.

Just because it’s electric doesn’t mean there’s nothing to maintain.

07/10/2026

If you’re going to own an M car, you might as well have the right people looking after it 🥂