Hi guys. Urgent answer required if possible.

Suspension just dropped completely to the stops and all four lights permanently on the dash by the switch. Plugged in Nanocom which usually automatically switches on and I have nothing. Any ideas as I’m a few miles from home. Thank you.

Check fuse 33 (5A) as that is the one that supplies power to the OBD socket so runs the Nano as soon as it is plugged in.

Thank you. Will do.

On close inspection of the port. It seems there is a little bit of corrosion on the terminals. I did notice in the last couple of weeks when the car was parked up and returning to it late at night that it was all steamed up on the inside After heavy rain. I wonder if possibly some water has entered. If so is there a common fault where this might occur?

Quite right Dave. Fuse 33 had blown. Diagnostics faults stated a couple of sensors out of range, but it was on uneven ground and it said compressor faulty. Cleared faults, manually switched on compressor with the Nanocom and car is up in the air!

I wonder why the fuse blew . I haven’t used the Nanocom for months and the car has been performing perfectly suspension wise.

It's only a 5A fuse so maybe drowning the back of the socket in rainwater was enough to cause it to blow?

Possibly. Is there a common cause of dampness to the interior? All carpet seem to be dry.

Through the screw holes that secure the plenum to the bulkhead and through the pollen filter housings. Make sure the seals on the pollen filter housings are good and not letting water in there (wet pollen filters is a good sign it is getting there) and take the screws out that hold the plenum down, squirt RTV under the screw holes and fit new self tappers.

Thanks Dave. Will check that out tomorrow. Car lives in an open fronted garage and is never left in the rain unless of course like recently. It has been parked up during heavy showers while out and about.

Saying that, the condensation inside has only been in the last couple of weeks when we have had heavy rain weather and it has had a few outings in heavy rain so that could well be the problem.

Thanks again.

If you unplug the cable from the side of the Nano, at least for me, it will short the power pin when plugging it back in and blow the fuse almost every time!
Maybe just my bad luck, but I stopped unplugging the cable from the Nano and just do the contortionist act to get the plug in under the dash.
+1 on leak being at the Pollen filters or plenum. It does not take much of a leak and if the filters are wet, it works like a swamp cooler to humidify the incoming air!

Since getting it, I've never taken the cable off the Nanocom, I just leave it always connected. I remember seeing something about always connecting to the unit before plugging into the OBD socket too.

Yep!
I discovered this whilst being lazy.
Sitting in drivers seat (LHD) when the Nano would lock up such as switching off engine whilst looking at eas values,
I would unplug the cable from it rather than getting out, walking around and cycling power by unplugging the OBD cable.
it did not seem to matter how carefully I tried to re connect the cable, something would touch something, and I would need a new fuse!
Leaving the cable firmly clamped on is a good policy!!

That is interesting.

I have been doing it all wrong!

Agree with the above. I've also blew the fuse by removing the connector at the Nanocom end. I leave it permanently connected to the Nanocom now.

Ahhh,
Well, I am glad I mentioned my trials with it, it seems I am not alone!
Cheers!

I often had a little spark cross between the data socket and the plug when connenting the nanocom that way. If you connect it fast enough it usually works, but many times it blew the fuse.
On my Nanocom now also the power input via the data socket doesn´t work anymore, same as the round co-ax pin. Both blown. Now the only power source left is the usb on the other side...but to get it repaired I´d have to send it to Cyprus....

That all doesn't sound very good!

I wonder what the cause of my all 4 lights on the height display flashing for a few minutes and then settling down to all 4 permanently on means?

Nanocom stated height sensors out of range and pump not working.

Reset faults and all fine...

Maybe it's because I've been looking at L322, 4.4 TDV8s adverts...

Flashing then going to all 4 means a hard fault. If you have a height sensor out of range it will inhibit the pump so it doesn't damage anything. You probably have a dead spot on the track on one of the sensors so ever so often it will give the ECU and implausible reading.

Add another that leaves the Nano always plugged on its end to the OBD cable.
The little spark must be because the body of the Nano is metal and thus making as short?
Anyway, I made this mistake couple times and since then, never again :-)

AFAIK, BlackBox recommends having the Nanocom cable always connected first. . . . . .and yes mine stays connected as well !!