TD5 Air to Coils problem - Thinks its still got air!

Hi, got a problem with a customers TD5 (not my own for a change!), its a 2000 W plate 7 seat which originally had air suspension and someone has fitted coils. The problem is even though the ecu has been told it now has coils it keeps resetting itself back to the air setting, bringing on the dash lights, and clicking away at the compressor to self level but discharging the battery in the process. I've taken out the relay, fuse, disconnected everything at the compressor but still the dash warning lights come on and intermittently starts chiming as if you're raising the suspension. Anyone got an idea how to cure this? I understood that once the computer was told it was on coils that the air suspension side shut down and would stay that way unless reinstated. Myself and customer both getting frustrated now so any help will be greatly appreciated. Cheers.

dumb question but why leave eas compressor on redundant system? also why leave any eas components fitted when obsolete.

make sure the compressor and the height sensors are disconected

There are *two* places you need to disable the SLS.

One is in the dash settings, one is in the BCU settings.

I had to do this in reverse to refit air to mine after the previous owner went with coils.

David

I changed to coils a few weeks ago having had both sides going completely down at random during the very cold weather .
Left everything in place as I felt the height sensors could be the problem but couldn't wait for replacements at the particular time - may reinstall air again .
Disconnected all plugs from compressor .
But light was on and the chimes began when you passed 20 mph .
Snipped the wire to the ' speaker' behind the dash and left the light alone for the moment . No further porblems - might get light turned off sometime .

dooroy said:

Snipped the wire to the ' speaker' behind the dash and left the light alone for the moment . No further porblems - might get light turned off sometime .

Click to expand...

Nice, nothing like the satisfaction you get from doing a job properly

Considering getting a Nanocom as dealers around here can charge crazy prices - e.g. my brother was quoted €115 to extinguish SRS light following fitment of hands free kit . Another dlr later did it for €50 .
It seems Nanocom does pretty much everything on the D2 - would that be a fair assumption . 2 friends in the trade have Launch X431 but they seem to have limited LR application .

On a TD5 it does most things (not everything though).

It *does* certainly do the SLS<>springs conversion.

There are lots of rough edges on Nanocom though (mostly the english!) and I've not had much luck getting replies out of them when certain functions flat out don't work (like the odometer/bcu mileage sync :-( )