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Discussion Starter #1 (Edited by Moderator)
hi guys, i have a '95 3.0 m3 with a std bmw alarm(3g) mk1 and ews

over winter the battery died, i dont know how long for as i dont use the car in winter.
when i charged it back up the car had forgotten the alarm remote.
i could lock/unlock the doors with the key but not the alarm remote.
after a bit of meessing about, with the key and buttons, i got the remote working again.
now the alarm works as it should, but i cant get the car to start
it was all working fine when i parked it up.
when i turn the key i get ign lights, but then turn to crank and nothing happens.

i can hear any relays clicking, no starter, cant hear the fuel pump priming but not sure if i should?
theres a permanent live at the starter but no signal when cranking.
does this sound like a ews/immobilser fault?

nothing i do will make the car start.
any ideas on how to get the car going again?
cheers
 

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Are you 100% sure the battery is OK? If it has failed you'll still get the lights but nothing else and clicking from the relays.

Assuming you've tried a replacement battery or a jump start then read on....

Sounds like you have read this....

[URL]http://www.bimmerforums.co.uk/forum/f3/e36-alarm-identification-guide-3t-2t-3g-ews-t39173/[/URL]

As you have been fiddling (with the best of intentions) there could be some confusion with the EWS system. Firstly check the bootlid wiring as per the guide. This often shorts the CL system. Next make sure the alarm is unset and try locking & unlocking the car with the key, then try to start it (this will send the unset signal to EWS). Lastly try another key if you have one.
 

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Discussion Starter #3
thanks for the reply,
yes i have read that thread, it helped me know what i have lol

the battery on the car is fine, fairly new, fully charged and ive also tried it with the charger connected and set to boost(basically jump started while plugged into the mains)
there is no clicking of relays/starter like a flat battery would give. theres no live to the starter when the car is cranked.

i have tried starting the car after using the alarm and key in both doors, still nothing.

unfortunately i dont have a spare key or alarm fob
bootlid wiring is fine, its like new under there.
it seems more of an immobiliser prob than an alarm prob.
where is the starter relay?

i also tried to disconect the battery, wait 5 mins, turned key to p2 then reconect the battery
still nothing
 

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Discussion Starter #5
all fuses are ok, tried a different relay for the dme, pulled the boot wiring rubber off (no damaged wires),
the car has been outside all winter and theres hardly any trees, u thinking wet dme? i took the cover off the compartment and theres no evidence of it being wet, but i could take it out and open it up if its worth a look?
 

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If the compartment is dry then it's unlikely there will have been an issue.

Your car is a 1995, was it built in 1995 or late 1994? - If manufactured before Jan 95 it will have EWS I and there is a starter immobilisation relay instead of the chip/transponder system that EWS II uses. All the info I have seen is from the USA which states the relay is "In the relay carrier to the left of the steering column" which I take to mean behind the glovebox on UK cars.

If it is post Jan 1995 and you have EWS II it may be time to order a second key and try that. Keys can lose their coding and it is not unknown for previously "broken" keys to start working once a newly coded key has been used. Worst case you'll have a spare key!

After that then unless there is a failure of the EWS module (which is coded to the DME for EWS II) then it suspect it may not be an immobiliser problem after all!
 

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Discussion Starter #9
its jun 95 i think so ewsII

im 99% sure its an immobiliser fault as the car was working fine when i parked it up.

i dont suppose theres anyway of diagnosing a dodgy key?
or can the car relearn the key at all?
 

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No way of self-diagnosing that I'm aware of.

I've read that once the new key has been used old keys can "magically" comes back to life, I guess they just start recognising previously coded keys once EWS is kicked back into life!

You could probably get the key recoded at the dealer but I doubt you'll pay less than an hours labour and at the end you'll still have one key. New keys are around £30 to £40 and come cut & coded.

I'd still give some thought to a dodgy connection / earth somewhere.

You could always try something like putting the key in the ignition, switching to position 2 and disconnecting & reconnecting the battery - it may jump EWS back into life! Or try the key in upside down, or give it a wiggle when you try & start the car

Sorry, I'm clutching at straws here as there is only so much you can do over the web.
 

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Discussion Starter #11
No worries mate, im kinda clutchin at straws anyway thats y i posted.
I guess ill get a new key and go from there.
Just didnt wanna buy 1 to find its not that. Still like u say ill end up with a spare, i might aswell get a new alarm remote while im at it. Ive had the car 8yrs with only 1 key lol.
Thanks for trying, ill let u know how i get on.
 

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Just had a similar problem on a '96 518, though intermittenti. I tried all sorts to fix it with no luck.

Last ditch attempt was to change 2 fuses that looked perfectly OK, and hey presto, problem solved. All I can think is that they had condensation in the fuses. If yours has been stood outside over winter, it might be worth changing fuses even if they look OK just to see what happens.

One other thought. If the alarm is the serpi star 3g, then this would have been installed post build and the wiriong for the alarm will have been spliced into the loom at the power distribution box under the back seat. The wires should have been soldered and taped. Might be worth checking those splices are still OK.
 

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One other thought. If the alarm is the serpi star 3g, then this would have been installed post build and the wiriong for the alarm will have been spliced into the loom at the power distribution box under the back seat. The wires should have been soldered and taped. Might be worth checking those splices are still OK.
Have you read my guide Richard?

[url]http://www.bimmerforums.co.uk/forum/f3/e36-alarm-identification-guide-3t-2t-3g-ews-t39173/[/URL]

The alarm module is behind the dash on the E36, Under the rear seat on the E34.
 

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Discussion Starter #14
i had a play with the car again last night.

i found the ews box and checked i had power at it from the fuse, which i do, and the earth is ok.
when i turn the key to p3(cranking to start) i get a live into the ews box from the key, but no live out to the starter or to the dme.
also i dont get any sort of signal from the reciever.
does this sound like the key is at fault?
the dme fuse is ok, and when i turn the ign on i get a very faint buzzing in the engein bay area, if i unplug the ecu or the relay the buzzing stopps, so its obviously doing something. but theres no signal from the ews to tell it to power up properly.

i think its the key but just want some1 more in the know to say what they think.

cheers
 

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Have you read my guide Richard?

[url]http://www.bimmerforums.co.uk/forum/f3/e36-alarm-identification-guide-3t-2t-3g-ews-t39173/[/URL]

The alarm module is behind the dash on the E36, Under the rear seat on the E34.
Decent guide that one Billy. Might have been more useful to me had I seen it last week, but hey ho:)

I'm sure that my alarm module under my back seat looks diffferent to any of the pictures in your post though. I'll try to take a photo later and send over so you can add it to your set if you want.
 

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Discussion Starter #16
billy, ive just been messing about again lol

ive taken an ews unit out of another car, (my dads, another e36, 3.0 m3 95 with the same alarm) the ews box had the same part number on it, i tried that in my car with my key, didnt work,
tried his ews and his key held next to mine (mine in the barrel to turn, his next to it for the chip to be read) didnt work,
then tried his transponder ring from around his ign key, his ews bux, but my key in the barrel again, still didnt work.

do i need to take any other bits off his car for his chip to run my car?
such as the little black box (transmitter module) the transponder ring plugs into?

or any other way you can think of fault finding my car with his spare parts?
cheers
 

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The EWS unit is coded to the DME so swapping them over won't work, unless you swap the DME too.

There's not much else I can suggest other than getting a really good independant with the BMW coding software to have a look at it.
 

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Discussion Starter #18
ill swap the dme with it if it will help eliminate what could be causing the problem.

if i take the ews and dme out of my dads car and plug them in mine should it fire up then?
what about the key?
will i need my key in the barrel but his key next to the transponder ring for the chip?
 

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if i take the ews and dme out of my dads car and plug them in mine should it fire up then?

what about the key? will i need my key in the barrel but his key next to the transponder ring for the chip?
1) Assuming it is an immobiliser problem only then yes.

2) Yes, You will need your Dads key in near proximity so the induction ring picks it up.
 
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