Level control selecion has disappeared from MMI

Stuarta · #1 17th April 2012, 04:17 PM

Apologies for the copy/paste from the suspension forum but that one seems to have gone a bit quiet recently.....

Ok - I finally bit the bullet and replaced the other front air shock today.

Thankfully, the compressor hasn't got to the point of self destruction yet, so it works however.....I no longer have the option to select the ride through the car menu in the MMI and the settings menu now says "no further settings for this vehicle" or similar - no option for jacking mode / towing mode. The system works and raises the car, VAG_COM shows no faults but can't change anything. I also tried going into the hidden menu to see if anything was disabled - it doesn't seem to BUT I also can't get into the "vehicle" sub-menu - nothing happens.

This may or may not be linked to a battery failure last week - I left the suspension in jacking mode overnight to avoid overstressing the compressor but it appears to have drained the battery - next day it was totally dead. I recharged it and cleared the myriad of faults thrown up by it but this seems to be the only remaining symptom.

Anyone have any clues?

47p2 · #2 17th April 2012, 04:41 PM

Have you tried disconnecting the battery to see if it does a reset?

Stuarta · #3 17th April 2012, 04:44 PM

Haven't tried it - wouldn't that just give a whole load of error messages?

Off to try resetting the MMI and see what that does. Update - nothing whatsoever.

Getting late now, will fiddle with it some more tomorrow.

47p2 · #4 17th April 2012, 04:53 PM

Disconnecting the battery should not give any errors.
The proper procedure is:-

Switch the vehicle off and wait 20 minutes, then disconnect the negative lead, then disconnect the positive lead, then using a jump lead (piece of wire that has two crocodile clips) join the positive and negative leads together and leave them for 15 minutes. After 15 minutes remove the jump lead (crocodile clips) and reconnect the positive lead to the battery terminal and tighten up, then reconnect the negative lead to the battery and tighten up. Start up the engine.

Jump lead with crocodile clips.....
Must not be connected to any terminals that are still connected to a battery

Stuarta · #5 17th April 2012, 05:40 PM

Thanks - will give it a go tomorrow and report back.

Stuarta · #6 18th April 2012, 01:17 PM

Well I finally managed to get the system working - the suspension, that is, not the MMI controls.

I'm a bit worrid now of frying the modules I just got working again, so will wait a day or two before trying this.

I already tried updating the MMI from 5150 to 5570, which I'd been planning on doing anyway but that had no effect.

In the meantime, if anyone has more ideas of how to bring the controls back, I'm all ears.

Thanks to all for the help.