Hello. I love this car. My last few vehicles have been Toyota Land Cruisers. This is my first MB. I've put about 1600 Autobahn miles on it since I bought it three weeks ago.

I have some questions. Where can I get a Factory Service Manual or a good repair manual as I've heard these are maintenance intensive cars. I kept my Land Cruisers on the road by doing the maintenance on them myself. I'd like to do the same for the 500. I'm the third owner, 175km, always garaged/maintained and everything worked on it up until tonight. It has the ortho seats and everything else, but traction control. It doesn't have the close assist AFAIK that the state-side versions seem to have.

Tonight the central locking system quit working. I unlocked the car, got in and started the car. The dome lights stayed on and blinked a bit. I've done some searching on here regarding the pump. I don't know exactly where it is or how to get to it. I can unlock the doors and trunk with the key manually, but the trunk handle doesn't pop out like it did.

Also, the auto-up/down feature on the windows quit working on all four windows tonight too. I can roll them up/down so long as I don't click it all the way to the auto.

What started all this was is I dropped by the shop to pick up an air pressure guage as my left front tire is wearing on the outside. I thought it was the air pressure, but it's fine. I assume it needs an alignment. I'd appreciate any tips on that and tire suggestions as I'll probably be replacing them soon. My tire pressure is 40psi. I assume that is what it ought to be. I was surprised it was that high though. I guess it sensed it was near a shop and decided to give me something to work on.

Thank you in advance for any and all help!

Chad