1996 250d elegance immobiliser problem

[slapdash77]

had battery disconnected from car, itted new crank sensor also fitted new batteries in inition key (flip out type) when I press the key the central locking opens, green light on interior rear view mirror flashes,alarm turns off, put key in ignition, turn ignition on, red and green lights flash alternatley,(fast) on miror, heater plug light goes out after a few secs, starter turns over but will not fire up, if there Is a re-set procedure between the ignition key and immoiliser, could anyone tell me what it is thanx in advance fingers crossed

 

[television]

Do you have BAS on the car do you know

 

[slapdash77]

what's BAS ???????

 

[television]

Brake Assist System

 

[slapdash77]

not sure what would I be looking for ????

 

[television]

There is a listed fault for cars with BAS another is did you leave the key in the ignition when you changed the battery, but not sure of this on a 1996 car

 

[slapdash77]

cant remember if key was in or not I don't think the ignition is the type with a 'chip' in the key

 

[slapdash77]

you just answered my qustion to another member, my red and green lights are flashing when ignition is in position 2 meaning immobiliser isn't off all I need to know now is how to sort this out ha ha ha is it a simple re programing

 

[television]

I have put up the key programming loads of times,,there are lots of post on this.

Do a search and there are post like this, though this does not include the re sync,,but I can find that again tonight
http://forums.mercedesclub.org.uk/showthread.php?t=39641&highlight=202+sync

 

[television]

I have put up the key programming loads of times,,there are lots of post on this.

Do a search and there are post like this, though this does not include the re sync,,but I can find that again tonight
http://forums.mercedesclub.org.uk/showthread.php?t=39641&highlight=202+sync

 

[slapdash77]

thanks i just tried that 'switch on and leave ignition turned on for 30 seconds' still nothing I'll log on later and look at what you've posted about sync thanks for your help so far

 

[slapdash77]

been reading up on here all afternoon !!!!!!!!!!!! good way to spend a friday read loads of talk about two wires to join together under the carpet in the passenger footwell to disarm the immobiliser just need to know what colour wires I should be looking for !!!!!!!!!!!!!!! are they the ones with the fuses on??????? HELP !!!!! ha ha ha

 

[bigasotonuk]

been reading up on here all afternoon !!!!!!!!!!!! good way to spend a friday read loads of talk about two wires to join together under the carpet in the passenger footwell to disarm the immobiliser just need to know what colour wires I should be looking for !!!!!!!!!!!!!!! are they the ones with the fuses on??????? HELP !!!!! ha ha ha

Hi,
That solution only works on petrol models with the Scorpion Alarm/immobiliser.
I have never had any dealings with bypassing the immobiliser on a diesel but apparently it is done through a "coded" fuel valve, where this valve is or how to bypass it, i don,t know.
You could try MB parts and look at the fuel system and ask if any of the valves in the system have to be coded to your chassis no./car.
Syncronising the key won,t make any difference, as the fob unlocks/locks the car. Couple of things to try,
1, Replace your remote batteries, even though it locks/unlocks they can still need replacing.
2, Try using your spare key.
3, Disconnect/reconnect car battery. (leave disconnected for approx. 2 mins.)
4, Check the car battery is fully charged.
5, The fuses you are on about are they the ones on the alarm control box in the passenger footwell, if so check continuity through these as mine were in very poor condition.
You talk about the red & green L.E.D.'s in the rear view mirror, have you got the same in the drivers door? both L.E.D.'s in both the door and the mirror need to be working as this can cause immobiliser issues.
As far as B.A.S. is concerned, as far as i,m aware it was,nt fitted to a W202 until they face lifted it approx. late 1997, early 1998.
I hope I have been of some help.

 

[television]

3, Disconnect/reconnect car battery. (leave disconnected f
As far as B.A.S. is concerned, as far as i,m aware it was,nt fitted to a W202 until they face lifted it approx. late 1997, early 1998.
I hope I have been of some help.

Yes Andy the BAS did not come in before 1997 for 98 but some argue that they have it

 

[slapdash77]

OMG !!!!!!!!!!!!! don't ever seem to get any nearer If the key fob only opens the doors/ turns on/off the alarm what tiggers the immobiliser ?????????? surley somwhere along the line a relay is triggered or a maybe a valve powered to open is it just time to take a baseball bat to it and smash it to high heaven ha ha ha!!!!!!!!!!!!!!!!!!! come on members dig deep and try and help me out this is four weeks now 3 mechanics 1 locksmith 1 tow truck thank god I don't have a problem with the space station you can go on the internet and find out how to put a 'vee dub' engine in a trike, a chevy engine in a fiat 500 a 10" D*** extention but find out how to dissable the immobiliser on a 12 yr old Merc derv and it seems like you ain't got a cat in hells chance ha ha ha

 

[television]

Synchronizing infra red key 124,129,140,202

This is for the flip out key (not DAS)
Model 124 with code 885
Model 124 as of 01-03-96
Model 129,140,202 as of 01-12-94 up to 31-05 97
Model 210 up to 28-02-97

If the car cannot be locked or unlocked the system must be synchronized.

Point window in remote key at a receiver.

Press the remote button momentarily.

(cars up to 12-93 lock or unlock car with folding key within 30 seconds in door lock)

Cars as of 01-94 with control modules 202 820 40 26 and 202 820 43 26. Switch on ignition with folding key within next 30 seconds.

Cars as of 12-94 with part number 210 820 21 26,
210 820 22 26 also 210 820 27 26 and 210 820 28 26 also 210 820 32 26 point remote key at receiver in interior mirror. press remote button momentarily twice, turn key in ignition lock to position 2 within the next 30 seconds.

 

[television]

Can a mod please make sticky or DIY thank you

 

[television]

I can tell you where the k38 stater lock out relay is,,I need an Email address

 

[slapdash77]

hi ya malc button on key locks and unlocks doors it arms and dissarms alarm when I turn ignition on (all dash lights on) red and green lights on interior mirror flash alternate saying immobiliser still active, all lights on mirror are working lights on door handle are working how do I deactivate that immobiliser for good i dont mind if I have to rip the car apart to do it my e mail is slapdash77@hotmail.com (any help off anyone greatly appreciated) thanx

 

[television]

I have sent you the k38 paper if fitted it isolates the starter from the immobilizer.

You could be barking up the wrong tree on the faults

I cant read it all but have you tried taking off the battery for 5 mins