On a nissan qashqai 2011 dci, where is the oil level sensor located

Check the obvious things first. Check the fuses for the central locking and the battery in the key fob. If these are OK it could be the drivers side door lock servo that might be faulty.

To much to write to tell you how to remove the engine. You need a manual. Good mechanics just look and do the job. Sometimes they refer to the manual. Engine swaps are fairly easy. doing it yourself, you will save plenty, even with buying the manual and tools.

Hi this link is a FREE download manual for a Nissan Qashqai 2009 model, There's 4 manual...1.6 / 1.6 vista / 2.0 / 2.0 dci acsenta you choose and try pulling your seat out and up, It'd clipped in..Cheers..
LINK->
http://www.repairservicemanuals.com/Nissan/Qashqai%202.0%20Acenta/2009/

you need your brake system bled. You did not remove the air in your system.

Write to radio manufacturer or Nissan for code, or trawl Yahoo.

IF the tires are breaking traction, this is normal.

Contact your Nissan dealer!

let me google that for ya..NOT....refer to service. at dealer- for this question DO NOT ATTEMPT TO DO THIS YOURSELF.

The best solution you'll get from books at www.reliable-store.com

Tese are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicle- cars, atv, trucks. forklifts, boats, excavators etc.

We do not have this model in the US so we have no tech data on it. Sorry.