score:8
From Terminal 2 you can follow the signs to "München Airport Center". This is the building were the train to Munich Hbf departs (called "München Flughafen Terminal" by Deutsche Bahn). The building is located right next to Terminal 2 and connected by a short walk. There is no need to take a bus or buy a ticket to get there.
The train station (which is marked with the symbol) does feature an elevator to the platform. To get there, go a bit beyond the escalator and look out for it as it is sandwiched between a restaurant and a wall and not well signed. It can be seen here on the airport map.
An alternative would be to get the Lufthansa Airport Bus which departs directly from Terminal 2. However, it does not accept train tickets and I don't know how accessible it is.
In any case, Munich Airport does have a mobility service. You can either ask any member of staff or at the information desk for help getting to the train as it is quite a distance to walk. Even better would be to get in touch beforehand (at least 48 hours). In that case someone will helping you for the whole way from the airplane. They can be reached at [email protected]
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Some information on the accessibility of Munich Airport can be found in their brochure.
Upvote:2
There's a bus from Airport to Hbf which goes something like every half hour and it was pretty accessible as far as I remember.
Just follow the signs, that's how we stumbled into in when we were in Munich.
Upvote:4
Regarding your edit, I think you've got a few things mixed up.
The walking distance from Termal 2 Gate G23/G24 (for example) to the S-Bahn station "München Flughafen Terminal" is 550 meters. You don't need a bus here, and you don't need a ticket for walking :-)
Google seems to have problems to calculate the way for pedestrians when you follow the link. In my browser it says 550 m / 8 Min.
(The is a bus from terminal 2 to München Hbf, as an alternative to the S-Bahn. That might be the soucre of the confusion.)