EWS for M52

[DanThe]

Where abouts is the module located in an E36?

As I understand this is whats needed -

Key
Sensor ring
Module
Wiring from sensor ring to module

Is that right?

[old_skool]

You need the EWS unit itself plus all the plugs, transponder unit, loop and key. I think that's it.

No idea where the EWS is, I guess N/S, whereas the transponder and loop are in or near the column shroud.

[DanThe]

EWS unit is what im calling 'module' should change that to ECU

So-
Key
Sensor ring
ECU
Trans/Recieve module
Wiring from sensor ring to module to ECU

I take it the ECU is wired to the X20?

[old_skool]

I take it the ECU is wired to the X20?

Yes it is mate.

Well, on mine the EWS ecu connector (X1659) pin 4 connects via the X20 to the Motronic pin 66 (enable signal). Also (X1659) pin 13 goes to (X1660) transponder unit pin 1. The other wires to connect to the X1659 are perm live to pin 5 and ground to pin 7.

Or something like that (I'm just copying off Ian)

[ian332isport]

You need the following parts:

EWS module (see below)
Main engine ECU
Small transmit/receive module (size of a match box)
Key
Loop aerial

The EWS module on an E36 is found behind the glovebox.



The transmit receive module is found on the other end of the green wires running from the loop aerial on the end of the ignition barrel.

Cheers,

Ian.

[DanThe]

Cheers for that

Is there any way around the engine ECU needing to be matched as well?

[ian332isport]

Cheers for that

Is there any way around the engine ECU needing to be matched as well?

Not really. I guess that's why it's such a good security system.

The only bits that need to be matched are the key, ECU and EWS module. The other parts can come from any E36.

[ste]

Oh and don't lose the key chip... it starts all sorts of pain....

[DanThe]

Did you find it ste? I can get a system of parts minus the key

[ste]

Nope - I ended up buying 2 new whole EWS sets in the end. A long, expensive lesson...

[DanThe]

Including the engine ECU?

[ian332isport]

Including the engine ECU?

It was indeed

[DanThe]

Just the thought of that bill is making me feel physically sick

If it was passed across the counter to me I would, without a doubt, collapse and begin to spasm

[ste]

It wasn't 'that' bad. I bought a full lock kit - all door locks, ignition barrel, keys, ECU, EWS etc from ebay for £100.

When I had the mis-timing issue (180 degees out) I suspected te ECU wasn't compatible, as some info from a BMW specialist led me to believe the crank trigger changed position at 10/98. My engine was post that date and the ECU was pre... Assuming this was the case I bought another whole set from a BMW breakers - can't remember which, I think it was FAB or similar. That one was about £230 I seem to remember... so it started to make my £300 M52 engine 'expensive'.

(Incidentally, they did change the crank trigger from a wheel on the front of the engine to a sensor in the side of the block that read a smaller wheel on the side of the crank at that date - it turns out the 'timing' of the signal is still the same and any ECU will run either engine so my swap wasn't necessary)

Anyway, the lesson is don't lose the chip!

If anyone wants a full EWS 'kit' I now have a spare - I also have a full set for an M52b25 as the breaker sent a kit for a 323i initially and have failed thus far to send a courier to collect it.

[DanThe]

Thank god for that, when you said 'new' I thought 'parts desk new'

pm sent

[ste]

Good lord no, you could actually buy a whole E36 328i for the cost of a matching ECU, EWS and key set from BMW.

[Andyboy]

Ste, is there any reason you used EWS as opposed to a standard set up? I'm sure you could run a 2.8 with an M50 loom, 325i manifold/tb/injectors. Or did you have a really late one with the crank sensor at the back of the block by the starter?

[DanThe]

Andy325i was having problems with his setup like that Andy

Over fueling I think

[ste]

Ste, is there any reason you used EWS as opposed to a standard set up? I'm sure you could run a 2.8 with an M50 loom, 325i manifold/tb/injectors. Or did you have a really late one with the crank sensor at the back of the block by the starter?

Nah mines pre 10/98 (just) so has the crank sensor on the front.

I used the M52 loom because my M52 came fitted with it so it was free. To buy a seperate M50 loom would have cost money I didn't ned to spend. I'd have also lost the vanos, and been running with an ECU map not intended for the car, plus I'd have lost the security feature of the EWS which is the whole point of it!

I didn't get involved with wiring the EWS in. Ian Haynes lives a 2 minute walk from my house and is easily bribed with curry . He assures me it's as simple as connecting literally 2 wires up to make the EWS work though.

[ian332isport]

He assures me it's as simple as connecting literally 2 wires up to make the EWS work though.

I think it's 5, but still not exactly tricky

[DanThe]

Right, got these bits -



Thanks to Ian for the diagram

All I need now is a key chip

[Andy325i]

:D:D


Andy

[ian332isport]

All I need now is a key chip

Yes and no

You need the chip that's coded to that EWS module, or you need another EWS module that comes with a matching chip. You really need the matching ECU, although it is possible to align an ECU to a different EWS module. I've yet to get this to work though. You would really need to fit the parts in an E36 328, and then do it.

If you are on very good terms with your dealer, you may be able to get them to order you a replacement key (complete with chip) for the EWS module you have already. The VIN number on the ECU is enough info to get the correct one. They usually want to see a V5 and proof of ID though, so not always possible on a converted car.

Cheers,

Ian.

[DanThe]

If you are on very good terms with your dealer, you may be able to get them to order you a replacement key (complete with chip) for the EWS module you have already. The VIN number on the ECU is enough info to get the correct one. They usually want to see a V5 and proof of ID though, so not always possible on a converted car.

Cheers,

Ian.

Thats the plan Ian
I wont be able to get a V5 but my man in the parts said any DVLA type doc with the cars details will do as long as I also have a receipt to prove I bought the car in good faith.

[ian332isport]

My engine came without a key, and my dealer got me one without too much fuss. This was a while back though, and I believe there's more paperwork involved. Hopefully they will sort you out, as it will make life a whole lot cheaper/easier

Ian.

[nes85er]

Hi everyone.
yeah, when i got my keys at the dealer they wanted me to bring all paperwork that showed proof i purchased the engine and all #s related to the vehicle i got the engine from. Once i did that they happily gave me the keys =D

[sajgon]

Hi!
It's my first post!
If You can't find EWS or if Yoo don't have maybe I can help You.
I had problem with M52B28 ald EWS and I give computer for clear from EWS and sond lambda. And no is OK. My computer don't see EWS and lambda. Cost 190 pounds

sorry for my english!

[jaistanley]

Oh good god... I know I put the EWS bit from my S50 round here somewhere..... SOMEWHERE! (I've moved twice since! LAME)

I'll do what I did as a kid and ask me mum.

Jai

[DanThe]

Should of put it on your key ring Jai

Always the way though aint it, you think you will be using something in the near future so leave it lying about, 12 months later its no where to be seen

[jaistanley]

Rang me mum in Panic. After much coaching she found the entire Z3M loom, ecus etc and the key in my desk-tidy thing.

WOOHOO!

You guys scared me for a second there!

Jai

[tomson]

Does anyone have a picture of all things including the loom, EWS related please?

And is the systen you guys are discussing identical in parts and principal to an S50?

I need to know this as ive been offered an S50B32 locally which apart from this EWS stuff i know is is all there for a conversion, so im thinking of binning the M30 as i still dont have all the relevant parts and going for this intsead.

Cheers

[DanThe]

There is a pic of the parts on the first page tomson, everything except the key, I think the loom is part of the main harness so just snipped a decent length as there are only three or four wires needed to unlock the ECU and start the engine

24 valve is the way forward

[tomson]

There is a pic of the parts on the first page tomson, everything except the key, I think the loom is part of the main harness so just snipped a decent length as there are only three or four wires needed to unlock the ECU and start the engine

24 valve is the way forward

yeah i saw that one, so the ews loom is part of the car loom right, not the engine loom?

I viewed the S50B32 earlier on and on a pallet is just like an M20 with regards to there is an engine, with loom attatched and a plug on the end for the ecu. I dont know why but i expected it to be a whole lot more complicated! Im bang up for havin a bash at this but having just read the other thread by oldskool the wiring he has done looks like a mare and looks so different to what saw earlier!

[DanThe]

Wiring isnt hard at all mate

Just time consuming

[old_skool]

Wiring isnt hard at all mate

Just time consuming

The wiring isn't hard, it is however very time consuming to do it the way I have gone about it. If you are happy to use the E36 covers and put the ECU on the nearside then it would be a fair bit easier as there wouldn't be that much paring out to do.

I wanted to thin down my loom and get rid of what is quite frankly a lot of wiring that isn't required. I also liked the finished but albeit constrictive 4 cylinder covers. To be honest, without proper organisation it's a little like getting an elephant in a suitcase.

When BMW build these looms they are designed and installed to work in multiple layers - hence a lot of wiring is duplicated and can be rearranged. Given a large amount of patience and one of Mr. Haynes quite wonderful wiring charts of course!

The best bit for me, is that by doing it in this way I have now got a far better understanding how the whole setup operates. Certainly not to the same level as Ian has though

If you want to keep the conversion quick, then don't do it my way!

Oh, and BTW, it's S50



HTH