Hi my car was off the road for a few months.  It needed jump starting.  But now my MMI won't work , theres Just a blank screen .I Took it to volcksmaster but they couldn't find anything on there diagnostic computer? Any one had this problem or got any  solution? Many thanks 

There's a good chance your battery is damaged as a result of being allowed to discharge too far. I suggest you get it professionally tested and replaced if necessary.

Note that (a) a volt meter test is not sufficient, and (b) a new battery must be coded to the car.

Thanks for your information 👍🏻👍🏻 much appreciated. Will a normal garage beable to check this ? 

 

I would have expected Volksmaster to have tested the battery as a first response to an electrical problem. Did they? Did you inform them the battery had been flattened?

Hi , I did tell them that the battery had been flat , I'm not sure if they tested it. They said they suspect the mmi has gone down during jump start. But said they want £250 to further investigate which id rather avoid if i can as they said they  still might not find anything. They did a forced reboot and still didn't find anything. 

 

Perhaps it might be better to get the battery tested elsewhere. Halfords are often recommended on the forum, though I am not keen on them.

Yes good idea,  I'll get it checked out. Thanks much appreciated for your help.

Yes good idea,  I'll get it checked out. Thanks much appreciated for your help.

11 hours ago, Richard jones said:

Hi my car was off the road for a few months.  It needed jump starting.  But now my MMI won't work , theres Just a blank screen .I Took it to volcksmaster but they couldn't find anything on there diagnostic computer? Any one had this problem or got any  solution? Many thanks 

Try holding the power button down for 15 seconds till the MMI screen says initializing.

Hi pal , I've tried that.  But nothing happens  ! Thank s anyway