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Old 09-30-2019, 10:08 PM
Join Date: Sep 2019
Location: Austin, TX USA
Posts: 6
greg328 is on a distinguished road
Weird no-start problem when warm--2011 X5 35i

Searched several forums, could not find info re: my particular issue:

Over the past week, my 2011 X5 6-cylinder has exhibited a weird, sort of random no-start condition when warm. After a drive and park, car will not start with key inserted and start button pushed. I do hear the pump clicking (once), but will not start. Several button-push attempts in the first 2 minutes yield no satisfaction. If I wait another minute or two, car starts right up as normal, as strong as you'd like.


Battery is fresh.

If memory serves, I think the cluster display may be showing an "!" in place of the "key" image. I've tried both my keys, problem occurs with both.

At first I was thinking I've got a bad starter, and the bendix is just situated on a bad tooth. Now I'm not so sure--I think it's possibly an immobilizer issue--key is not being seen, then is IS seen.

If this is caused by a bad battery/ground/starter--why does it start normally sometimes, and not so much when warm? But then WILL start--when warm???

Like I said, weird!

Has anybody had something similar occur, and perhaps found a cure? I've got a third-party warranty that "should" cover this, should I bring it in for service, but I'd rather try to tackle it first myself.

Seems I saw a Youtube video regarding a common BMW immobilizer issue, with a bad relay causing similar problems, but I can't find it now.

Any assistance will be appreciated,

Austin TX
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