Car sometimes will not start

evillock · 7th January 2009, 18:36

This is a strange one, but im sure you guys on here will have me up to speed asap.

My ZT kv6 starts everytime on the button, but twice now ive unlocked my car, set up my satnav, sorted out some paperwork to my next job and the car feels like shes been immobilised, for some reason theres nothing, i can keep turning the key to no joy, i have found if i re-lock and unlock my doors from the keyfob she then re-starts with no problems.

So is this just me farting about taking far to much time and upsetting her or does it sound like there could be a problem in maybe my key or key fob batt??

Thanks in advance peeps

afcbadam · 7th January 2009, 19:13

that shouldnt cause a problem. it sounds if the immobiliser is immobilising for some strange reason, which it shouldnt do when the key is in the ignition. the engine is still immobilised when the doors are unlocked and only activates when the key is in the ignition

evillock · 7th January 2009, 19:19

the keys are in the ignition but not turned, just place there to be safe.

Departed · 7th January 2009, 20:13

Locking and immobiliser functions aren't related.

The battery in the keyfob isn't used for the immobiliser: the chip is read by a coil in the ignition barrel. It's read as you switch on the ignition, so I think what you are doing should make no difference.

Do you get any sort of warning tone or light when you switch on and it seems immobilised?

evillock · 7th January 2009, 22:04

no mate, nothing.

Just acts as if is been immobalised.

The first time it had happened i tryed turning the key about 5 times before i relocked then unlocked, then she started 1st time.

2nd time she done it once so i just re-locked and unlocked and off she went.

i though it was just me taking far to long to start her up as my astra with a cat 1 used to only let me start her within the 1st 30secs of the fob unlock

Moonstone · 8th January 2009, 11:19

Immobiliser issue would bring up a warning light. If you site for a while with accessories on, then maybe the (main) battery gets too low to start. Check the battery condition.

Another possibility would be a faulty ignition switch. Do any of the normal dash lights come on?

LEE · 8th January 2009, 15:53

this has happened a number of times with rover i have had in the past at work. I think that the ignition immobalises itself if the vehicle is not started in a certain time
Lee

evillock · 8th January 2009, 18:10

i get full dash light and everything works fine, its not trying to turn over.

Just acts as if its re-armed the immobiliser

Departed · 8th January 2009, 18:45

Quote:

Originally Posted by LEE

this has happened a number of times with rover i have had in the past at work. I think that the ignition immobalises itself if the vehicle is not started in a certain time
Lee

Other models had a different immobiliser, where the alarm / locking were related. The immoblisier was disarmed when unlocked and rearmed if you didn't start it.

The 75 is a BMW system, and only switches off the immobiliser when you switch on the ignition (or at least turn to acessories position).

Moonstone · 9th January 2009, 11:18

It looks like the immobilisation warning only appears if you have a message centre display. The manual doesn't list a standard warning lamp for it.

Here's what the manual says about immobilisation occurring:
· Three seconds after the starter switch has been turned off.
· If the key is removed from the starter switch.
The engine will be re-mobilised automatically
whenever the genuine handset key is inserted into the
starter switch and turned to the first position.

A bad contact on the ignition switch remains a possibility.

Some members have reported problems with the starter motor not always turning due to bad contact on the solenoid. This is often mistaken for immobilisation. Cleaning the spade terminal often cures the problem.

7th January 2009, 18:36	#1
evillock Regular poster MG ZR 1.8 vvc 160 Join Date: Dec 2008 Location: Sunny kent Posts: 80 Thanks: 0 Thanked 0 Times in 0 Posts	Car sometimes will not start This is a strange one, but im sure you guys on here will have me up to speed asap. My ZT kv6 starts everytime on the button, but twice now ive unlocked my car, set up my satnav, sorted out some paperwork to my next job and the car feels like shes been immobilised, for some reason theres nothing, i can keep turning the key to no joy, i have found if i re-lock and unlock my doors from the keyfob she then re-starts with no problems. So is this just me farting about taking far to much time and upsetting her or does it sound like there could be a problem in maybe my key or key fob batt?? Thanks in advance peeps

7th January 2009, 19:13	#2
afcbadam Gets stuck in 2004 MG ZS 180 Join Date: May 2008 Location: Southampton Posts: 978 Thanks: 0 Thanked 0 Times in 0 Posts	that shouldnt cause a problem. it sounds if the immobiliser is immobilising for some strange reason, which it shouldnt do when the key is in the ignition. the engine is still immobilised when the doors are unlocked and only activates when the key is in the ignition __________________ AFC Bournemouth www.themgzs.co.uk Inner wing open cone Oil catch tank Janspeed cat back Janspeed de-cat Reidy Re-mapped

7th January 2009, 19:19	#3
evillock Regular poster MG ZR 1.8 vvc 160 Join Date: Dec 2008 Location: Sunny kent Posts: 80 Thanks: 0 Thanked 0 Times in 0 Posts	the keys are in the ignition but not turned, just place there to be safe.

7th January 2009, 20:13	#4
Departed Retired -- Join Date: Jan 2007 Location: -- Posts: 3,785 Thanks: 0 Thanked 4 Times in 4 Posts	Locking and immobiliser functions aren't related. The battery in the keyfob isn't used for the immobiliser: the chip is read by a coil in the ignition barrel. It's read as you switch on the ignition, so I think what you are doing should make no difference. Do you get any sort of warning tone or light when you switch on and it seems immobilised?

7th January 2009, 22:04	#5
evillock Regular poster MG ZR 1.8 vvc 160 Join Date: Dec 2008 Location: Sunny kent Posts: 80 Thanks: 0 Thanked 0 Times in 0 Posts	no mate, nothing. Just acts as if is been immobalised. The first time it had happened i tryed turning the key about 5 times before i relocked then unlocked, then she started 1st time. 2nd time she done it once so i just re-locked and unlocked and off she went. i though it was just me taking far to long to start her up as my astra with a cat 1 used to only let me start her within the 1st 30secs of the fob unlock

8th January 2009, 11:19	#6
Moonstone Loves to post Rover 75 Tourer Join Date: Nov 2006 Location: Scotland Posts: 412 Thanks: 0 Thanked 1 Time in 1 Post	Immobiliser issue would bring up a warning light. If you site for a while with accessories on, then maybe the (main) battery gets too low to start. Check the battery condition. Another possibility would be a faulty ignition switch. Do any of the normal dash lights come on?

8th January 2009, 15:53	#7
LEE Newbie ROVER 75 TOURER Join Date: Dec 2008 Location: WOLVERHAMPTON Posts: 26 Thanks: 0 Thanked 0 Times in 0 Posts	this has happened a number of times with rover i have had in the past at work. I think that the ignition immobalises itself if the vehicle is not started in a certain time Lee

8th January 2009, 18:10	#8
evillock Regular poster MG ZR 1.8 vvc 160 Join Date: Dec 2008 Location: Sunny kent Posts: 80 Thanks: 0 Thanked 0 Times in 0 Posts	i get full dash light and everything works fine, its not trying to turn over. Just acts as if its re-armed the immobiliser

9th January 2009, 11:18	#10
Moonstone Loves to post Rover 75 Tourer Join Date: Nov 2006 Location: Scotland Posts: 412 Thanks: 0 Thanked 1 Time in 1 Post	It looks like the immobilisation warning only appears if you have a message centre display. The manual doesn't list a standard warning lamp for it. Here's what the manual says about immobilisation occurring: · Three seconds after the starter switch has been turned off. · If the key is removed from the starter switch. The engine will be re-mobilised automatically whenever the genuine handset key is inserted into the starter switch and turned to the first position. A bad contact on the ignition switch remains a possibility. Some members have reported problems with the starter motor not always turning due to bad contact on the solenoid. This is often mistaken for immobilisation. Cleaning the spade terminal often cures the problem.