1. VDO makes the nav unit. Near as I can tell the SW that lets it communicate with the BMW systems is unique - it's what makes a 'VDO nav unit' a 'bmw mark 4'.
2. Any decent nav that does auto routing costs US$1000 or so, There are cheaper navs that tell you where you are, but no autorouting for a few hundred. These will NOT integrate.
3. No way around it- you either need to give up on nav (no aftermarket units are better than a Mark 3 IMHO, hence no point in that route) or upgrade
4. You'd get a remanned Mark 3. Nice try
A
2. Any decent nav that does auto routing costs US$1000 or so, There are cheaper navs that tell you where you are, but no autorouting for a few hundred. These will NOT integrate.
3. No way around it- you either need to give up on nav (no aftermarket units are better than a Mark 3 IMHO, hence no point in that route) or upgrade
4. You'd get a remanned Mark 3. Nice try
A
