hot starting problem?

[neilz85]

it was cold the other week. which maybe the start of the problem?
when i start my car in the morning its fine. i drive home, about half a mile to have a descent brew coz my misses brew kit at her house isn`t as nice. but when i start it 20 mins later, no k light comes on and won`t start. i flick it on an off, pre start, hopeing for the light. it might take 10 mins before it suddenly comes on and starts. i was in bnq drove for 1 min1 this evening after it started fine, to go pets at home, went in, 5 mins and it wouldn`t start - no k light. tried a couple of times. after about 10 mins, k light came on and so started.
my ecu is unlocked.
wonder if anyone had anyideas to look at?

[Poodle]

By "K light" do you mean the engine management light? Any other lights come on at all when this happens?

[neilz85]

By "K light" do you mean the engine management light? Any other lights come on at all when this happens?

yeah the engine management light. its on all the time when working coz i have had chance to plug it in and sorted yet. the air bag light comes on, a usual though all light up as normal, eccept the management light. once its lite, it will start no problem

[Poodle]

No idea then tbh, would say immobiliser, but then why only when its hot..?

[neilz85]

No idea then tbh, would say immobiliser, but then why only when its hot..?

not a clue. hoping the weather holds out for a bit to have a look

[neilz85]

plugged my car in today, afetr it not starting from cold. its shown that its a key transponder problem. even though my ecu is unlocked, it could possibly be corrupt software - its suddenly decided to start playing up for no reason. so my car will start when it wants, not when i need it. the engine light wont come on- so i know it wont start, 10 mins later, out if the blue, it will illuminate itself and it will start. i`m thinking it might be paying out for unlocking the bsi, even though its unlocked?