Rough Idle .car Stalls And Central Locking Stops Mk2.5 2009 Tdci

[dazzlerda17]

Anyone got ideas thinking battery as done dash test and read 11.4 then again this morning b4 i left for work showed 12.4 now back to 11.3/4 .....half hour later

The other day i locked my car heard it lock and i always click it again as i leave to make sure its locked but nothing happened and had to unlock with key and all dash logs reset still no power till i turned key in ignition

Now everytime i slow down seems really rough and wants to stall .......is this just a battery problem or more ...

Any help out there would be good before i go wasting money on the wrong thing

[IINexusII]

first thing you should do is take it to any garage that will do a free battery/alternator test