A8 Parts Forum - Mmi 2g update

Update on the nav problem.

So, having tried and failed with a genuine 2018 Audi dealer map DVD, kindly provided by our sponsors, the fault has to be within the nav player then.

New Audi dealer nav player = £Loads!

Getting another used nav player to try will probably just bring up the same problem.

Change the laser? A bit too intricate for me I'm afraid, need something simpler.

Hmmm, lets try something else. DVD M2 5.6, bottom of page 2 in Audi mechanism here:

https://www.lasertrader.de/english/

Change the whole inside mechanism for a new one? Ok, we'll try that. £197 delivered from Germany. Arrived safely six days later. They do lasers as well I think.

For those of you who haven't opened the nav player before (including me), here we go...............

Locate the nav player :D

http://forum.a8parts.co.uk/attachmen...1&d=1617711685

Best to take the nav out to get to the cables.

Slightly loosen this 10mm bolt. Nav carrier slides into it:

http://forum.a8parts.co.uk/attachmen...1&d=1617711761

Take this 10mm nut off and remove the nav carrier:

http://forum.a8parts.co.uk/attachmen...1&d=1617711826

Remove the cables:

http://forum.a8parts.co.uk/attachmen...1&d=1617714857

I didn't have the fancy radio extraction tools, so just used a pair of tweezers to shove in the slots and pull the nav out of the carrier just enough to see the red retaining spring thing:

http://forum.a8parts.co.uk/attachmen...1&d=1617711960

With a biggish flat screwy, push the red spring in on both sides and pull the nav all the way out of the carrier:

http://forum.a8parts.co.uk/attachmen...1&d=1617712033

http://forum.a8parts.co.uk/attachmen...1&d=1617712091

With the same flat screwy, place it in the slot and twist the nav case lid up. Same with the other slot. Comes up easy enough:

http://forum.a8parts.co.uk/attachmen...1&d=1617712183

http://forum.a8parts.co.uk/attachmen...1&d=1617712246

Remove the lid:

http://forum.a8parts.co.uk/attachmen...1&d=1617712329

Remove 4 little screws with a tiny star head bit, T8 I think. One on each corner:

http://forum.a8parts.co.uk/attachmen...1&d=1617712436

http://forum.a8parts.co.uk/attachmen...1&d=1617712493

Lift the mechanism out and flip it over, careful with the ribbons:

http://forum.a8parts.co.uk/attachmen...1&d=1617712558

Remove the 3 ribbons:

http://forum.a8parts.co.uk/attachmen...1&d=1617712629

http://forum.a8parts.co.uk/attachmen...1&d=1617712730

Line up the new mechanism:

http://forum.a8parts.co.uk/attachmen...1&d=1617712797

http://forum.a8parts.co.uk/attachmen...1&d=1617712856

Insert the 3 ribbons back in the same place:

http://forum.a8parts.co.uk/attachmen...1&d=1617712928

Flip the mechanism back over and fit it back in the nav case, careful with the ribbons again. Put the 4 little screws back, then fit the lid back on:

http://forum.a8parts.co.uk/attachmen...1&d=1617713000

http://forum.a8parts.co.uk/attachmen...1&d=1617713074

http://forum.a8parts.co.uk/attachmen...1&d=1617713261

Slide the nav back in the carrier. Reconnect the cables, then secure the nav player in it's cosy little home.

Okaaay, time to test it!

Latest (final release for MMI 2G), DVD in the slot:

http://forum.a8parts.co.uk/attachmen...1&d=1617713436

Nooooooooooo! :mad:

http://forum.a8parts.co.uk/attachmen...1&d=1617713719

Right, try the old 2004 DVD:

http://forum.a8parts.co.uk/attachmen...1&d=1617713839

Well this works ok:

http://forum.a8parts.co.uk/attachmen...1&d=1617714003

So, I tried the 2018 DVD again, but still got the same 'check nav DVD' message on the screen. I kept changing the old and new DVD's over until the mechanism eventually recognised the 2018 DVD and then started loading up!:

http://forum.a8parts.co.uk/attachmen...1&d=1617714106

http://forum.a8parts.co.uk/attachmen...1&d=1617714171

http://forum.a8parts.co.uk/attachmen...1&d=1617714236

http://forum.a8parts.co.uk/attachmen...1&d=1617714290

http://forum.a8parts.co.uk/attachmen...1&d=1617714348

http://forum.a8parts.co.uk/attachmen...1&d=1617714407

At last, she lives! :love:

There are some scratches on the DVD, maybe this had something to do with it, dunno?

Old mechanism:

Address 37: Navigation Labels: 4E0-910-88x-37.lbl
Part No SW: 4E0 910 887 D HW: 4E0 919 887 C
Component: MNS ECE H43 0550
Revision: 00000000 Serial number: 353EJ047522731
Shop #: WSC 02313 785 00200
VCID: 2E05097BDC17BBEBD1E-807A

No fault code found.

New mechanism:

Address 37: Navigation Labels: 4E0-910-88x-37.lbl
Part No SW: 4E0 910 888 P HW: 4E0 919 887 C
Component: MNS ECE H43 1060
Revision: 00000000 Serial number: 353EJ047522731
Shop #: WSC 02313 785 00200
VCID: 3B23302F1F655E439A1-806E

No fault code found.

Note: the 'SW' number has changed.

I was worried about component protection. I asked Ralf at Gerner, before he sent the mechanism, and he reckons:

".........the Audi component protection begins with MMI 3G".

Not sure, I wouldn't know, but there was no CP.

A heart sinking moment came later on. I switched the engine on, and got this:

http://forum.a8parts.co.uk/attachmen...1&d=1616519135

After a bit of investigation in the boot, I realised what the problem was. I must have pushed the left boot equipment cover too hard when fitting it back and it had touched the front of the nav player and the eject button. The DVD was trying to get out! :o

Aaaaanyway, it all seems to be working ok with the latest, albeit final, maps, which was the whole point of the mission.

Expensive? Maybe, well it is an A8, and an old one at that, but she deserves a bit of mollycodling :)

And finally.

As much as I'm pleased with the sat nav map update, I'm a bit miffed to see the new Mersey bridge doesn't exist on the map:

http://forum.a8parts.co.uk/attachmen...1&d=1616519858

Seeing as it was opened on 14th October 2017, I thought a 2018 map would include it, apparently not.

So, I'll never be able to see the Mersey Gateway on my sat nav. Oh well, I've been used to driving over the water with the old map anyway :D

Many thanks to all of you for your help +++