1999 S70 Immobilizer stopping car after starting

faddishworm · Post by **faddishworm** » 20 Jul 2015, 02:59

Hey all,

When I start the car about 2 seconds later it turns of - but its not a stall its a slow wind down so I am 99% sure its the immobiliser. Further to this, it doesn't start again after the first try - I have to wait 5 minutes to start it again. I read in the manual that this is the immobiliser.

I have tried both keys, and neither one works - which makes me think its probably not an issue with the ring antenna although I checked that anyway and it looks ok (no frayed wires or contacts).

Prior to this happening, I had the battery out for 1.5 days - could having the battery out reset the code in the immobiliser? Do I have to somehow reprogram the immobiliser? Is there anyway to bypass or remove it all together?

Thanks. My engine seems to be working fine now, but since I removed the battery the immobiliser is causing me grief. Thanks in advance.

Post by **abscate** » 20 Jul 2015, 03:46

I think the immobiliser shut off is quick and you've got something else wrong. Try unplugging you MAF perhaps?

faddishworm · Post by **faddishworm** » 20 Jul 2015, 04:46

Thanks for the reply, I unplugged the MAF but experiencing the same issue, its behaving the same as before unfortunately.

Post by **Ozark Lee** » 20 Jul 2015, 08:17

A bad immobilizer communication error will set a P code, P1670 I believe, so that can be read with a standard scanner. The typical behavior of the car is to start and die within about 1 second or even a bit less. The difference between one second and two seconds is splitting hairs but it is significant.

...Lee

Liggywuh · Post by **Liggywuh** » 20 Jul 2015, 11:52

I had similar, but not exactly the same issue. I had where the car would crank but not start, fuel pump wasn't firing up (no whistle sound). A quick look with the fault code reader showed up a fault.

I had P1081 with my 99 V70, it turned out to be the ring around the ignition barrel, after swapping that (with battery disconnected), the car has never been a problem again.

Just in case, I have changed the fuel pump relay (which I guess was about due anyway with the age of the car), but the car was showing no symptoms after swapping the ring.

Post by **abscate** » 20 Jul 2015, 12:44

Im guessing the 1999 in EU did not come with ME7. This will not work with a 1999 North America car.

Blockpartie · Post by **Blockpartie** » 20 Jul 2015, 13:36

abscate wrote:Im guessing the 1999 in EU did not come with ME7. This will not work with a 1999 North America car.

a) Some 1999 EU models came with ME7, those that didn't came with a Denso or MSA EMS.
b) Yes it will work with a 1999 US model. There is no functional difference between a US or EU/CA/NOR/... immobilizer for this model year.

Post by **abscate** » 21 Jul 2015, 02:18

I've read here many times with ME7 that if you don't marry components in VIDA replacement will not work. I am not an expert here.

Blockpartie · Post by **Blockpartie** » 21 Jul 2015, 03:10

The antenna ring doesn't have to be married to the car. It's the same part used from 1997-2005 for any X70 car with an immobilizer. More often than not the fault is related the the connection between antenna ring and wiring harness. So a simple "remove and reinstall" can sometimes help get rid of the problem.

Liggywuh · Post by **Liggywuh** » 29 Aug 2015, 23:24

Electrical contact cleaner and a cotton bud also goes a very long way!