2010 Volvo XC90 starting issue

[Arfur Dealy 823]

Both keys have good batteries, intermittently 50% it won't start... dash says "start prevented try again" we've changed the antenna in the steering lock but its still the same...... Any ideas before it goes to the steeler.....

[It's me 612]

split the keys as one may be the clone of the other one ,ie leave one key in key box and start afresh

[Arfur Dealy 823]

32 minutes ago, s and b said:

split the keys as one may be the clone of the other one ,ie leave one key in key box and start afresh

Done that, it’s not the keys.... 

[It's me 612]

have you tried putting your left leg behind your neck as you sing waltzin matilda

worked on the old spitfire trying to get back to blighty

toodle pips ......................

[Arfur Dealy 823]

2 hours ago, s and b said:

have you tried putting your left leg behind your neck as you sing waltzin matilda

worked on the old spitfire trying to get back to blighty

toodle pips ......................

Thanks for the tip, ill try it now 

[AVI_8 0]

Hi, ex mechanic here though not a Volvo specialist

Firstly is your car battery fully charged? It's crazy the amount of faults which can manifest on modern cars with battery's which are slightly discharged.

Also check switch on gearbox doesn't have a bad connection, the one that checks that the car is in park mode (assuming it's an auto) if the above fails and you've tried both keys and changed the antenna, sounds like it may be a module.

Good luck!