Q7 4L - update on problems

[Leighton82]

What an experience this damn Q7 has been. Awful car so far. Worst purchase decision ever. However, some fixes have been completed so that's something. Bit of advice sought on the following if anyone can kindly help:

- When I got car, vents were blowing heated air but when I tried AC it went into a locked ECON mode. Had AC regassed and that now blows cold air, although the G65 high pressure sensor still shows a lower limit exceeded error fault so could try swapping it. When I up the temps on the climate control, the blowers immediately stop sending air through and only throw out air when front demister is selected. Makes no sense as blowers obviously work! ECON still stuck on even when AC is blowing through. Tried clearing faults. Any suggestions?

- Where are the fuses for the ABS? Some forum chatter suggested by the battery under the seat but fuse diagrams say otherwise? Still have ABS/ESP warning lights so either it's bad fuses/wiring/connectors or module itself does need replacement.

- Still not solved air suspension issues. Tried new front air bags and pressure valves to no avail. Will be compressor, valve block, and relay next.

- Other annoyance is the horrible oil smell in cabin. Apparently oil leaking and pooling from around the EGR area and also the sump plug. Makes for a nasty driving experience.

Nightmare car so far! But thanks in advance.

 

[dzx]

1. AC and Climate Control Issue: It's possible that there could be a fault with the climate control module or its sensors, leading to the strange behavior you're experiencing. Since you've already tried regassing the AC and clearing faults, it might be best to have a professional diagnostic scan performed to pinpoint the exact issue. This could potentially save you time and effort in troubleshooting.
2. ABS Fuse Location: The location of the ABS fuse can vary depending on the year and model of your Audi Q7. Typically, the ABS fuse should be located in the fuse box under the hood, rather than near the battery under the seat. I would recommend referring to your vehicle's owner's manual or a detailed fuse diagram specific to your car's make and model to locate the ABS fuse accurately.
3. Air Suspension Issues: Since you've already tried replacing components related to the air suspension system without success, it's possible that the compressor, valve block, or relay may indeed be the culprits. Before replacing any more parts, I would suggest having the system thoroughly inspected by a qualified mechanic who specializes in Audi vehicles. They can use diagnostic tools to identify the exact cause of the problem.
4. Oil Smell in Cabin: The oil smell in the cabin could indicate a leak in the EGR system or around the sump plug. I would recommend having the engine inspected by a mechanic to locate and repair the source of the oil leak. Ignoring oil leaks can lead to more significant issues down the line, so it's essential to address this problem promptly.

In summary, it's clear that your Audi Q7 is presenting multiple challenges.