Mercedes C class Immobiliser bypass
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- เผยแพร่เมื่อ 24 ก.ค. 2016
- 1996 Mercedes C200 immobiliser wont disengage with the central locking fob. Central locking will unlock/lock but the lights in the rear view mirror will flash red and green one after the other. I tested the door receiver and replaced the fob batteries and also tested the resistors in the mirror. This is the only thing that worked.
I had the red green red lights flashing in the mirror. I could crank but not start my petrol 1995 C220 W202. I thought it was an immobiliser issue. I finally found one comment on a Mercedes owners website- just one line that said "check your Over Voltage Protection (OVP) Relay". (relay in that silver box with the fuse next to OBD port).
I did and that was it! That was my problem fixed! Easiest way to check the OVP is to remove the metal relay case and push the bottom relay with a plastic pen (with key in position 2) and you should hear the fuel pump and injectors come to life...and you can start your car. Order a new OVP relay (around $100) and you are good to go!
I hope my post helps someone as this was a major, major issue for me and i hope I can save another W202 owner from all this heartache! I was about to junk my car and send it to the wreckers as no one - not even the MB Dealer could diagnose the fault!
unplug the relay completely and test it?
i tried pulling out the relay by the metal case and have just separated the case from the relay
@@aadne5992 Maybe try working it out gently with a screw driver. Sounds like it has corroded in there. Also it might be that someone has previously pulled off the case before. Once I got mine out it was quite difficult to separate the case from the relay. Now your case is off use something plastic to engage the relay and see if you can hear your fuel pump start or the injectors. If so, your relay is faulty and needs replacing. I carry a spare in my glovebox now all the time now.
@@camcrothers7216 thank you, i'll try it tomorrow morning. i did some digging and it turns out that this is the second or third time my car has had an immobiliser problem (it has an aftermarket one installed in the car and apparently that's the one that's gone bad (the stock one went bad and the aftermarket one was wired in to replace it) 😬 but i'll try the ovp anyways so thanks!!
@@camcrothers7216 Hi I have Benz e320 1997 I recently try to change my key case and am the card key wouldn’t fit on the new case that I bought so I decided to keep the old so I put card back in next day in morning car crank but no start I check it every thing works fine I can here the fuel pump works fine there is electric come to the coils everything ok no issues with fuel or electric 🙄 but wouldn’t start
At the first the key weren’t lock or unlock so I disconnected the battery terminal just kind to rest everything key back to normal lock and unlocked
But still car wouldn’t start 😞 any help?
Thx bro my w202 is back 🇨🇵
Sheez it worked?
I think Mercedes original immo ( the other black box ) cuts the ground to the ignition coil. The aftermarket alarm does the same thing after the immo. They are connected in series to coil ground I think. When he remover the alarm and connects 2 green wires the alarm is bypassed but immobilizer still works. I will try to disable immo on my s600 after month. Wish me luck :D
Thank's a lot. it worked a treat
Did you disconnect the alarm aswell?
What was it doing 😭😭😭😭
So I have the same car except left hand steering.. my question is, is that this can do no harm to the car even if the bypass procedure is done correctly and dosent work?
Can youhelp because my 99 c43 has the same issue No start motor not turning over . Key in ignition nothing happens only dash lights come on but I get a constant power to the yellow and pink or( light red) wire coming out of the back of the EIS
Hi.. I have 96 E320 with no ground to the fule pump relay inside the K40, can you help please?? Thank you
What's the name of that silverbox on the video.please help
Salut,Ieri dupa cumparaturi,am mers la masina sa o iau spre casa..dar cand ma bagat cheia in contact pur si simplu nu puteam roti cheia spre dreapta sa o pornesc..nu merge deloc..am ramas pe drum,un prieten m-a tractat pana acasa...bateria nu este ,ca am curent,merge radio,luminile,inchiderea..dar cheia nu vrea nici cum,,,daca imi bag cheia acum imi arata,,connecting data please wait,,si imi arata o cheia,ce crezi ca e?
How did you know exactly which cables to cut? I'm having the same problem with the same car.
the 2 wires that comes out from the immobilizer follow them and see..... that one of them is making a loop to the alarm and then it comes back and continues away look at the colors :) . In my case was the green wire was going from the immobilizer and then was connected to a Purple that went to the alarm and came back a RED and Yellow that connected to the other side of the green that I believe it continues to the ECU.
Mihai Alexandru
do u know how many times I've watched your video? I'm positive I've watched it at least 30 times. And I still can't bypass my immobilizer. DAMN! Good video though dude.
Ezequiel Lopez Arias I just seen that the loop goes from the imobolizer to the alarm, and by doing that I cancelled one of them.
Where do you find the black box on your left where you are suppose to cut the wires? Only found the silver box and black box on the right hand side.
My car was right hand drive. So the box was on the passenger Side.
Where on the passenger side? Coz I only found one silver box and the small black on. The one with two connectors with many wires, where u cut two wires from, I cannot find it
Same here. Any joy finding it yet.
Hi Guys... I have a W202 C220. I washed my key and now my immo does not want to disarm. I have the red and green LEDs flashing on. My review mirror and I have to lock and unlock manually.
The car cracks but won't start. Who can I fix this.
This only applies to the early c class models, I've got a c270cdi from 2002 and under the footwell it is nothing like this, there is only a Siemens black box, not silver, therefore I still need to bypass the immobilizer and can't find anything about it.
True, that video is for the W202 series before the face-lift. They were fitted with a FBS2a Immobilizer system. Your model C270CDI which is a W203, is fitted with a FBS3 system according to (ecu.eu/immobiliser-systems-mercedes-benz-60.htm). This website says that the FBS3 (EIS/EZS) is actually the Immobolizer. For interest sake, what does your car do / behave to say or think that it has an Immo issue?
I think what he did was to bypass the alarm module. Probably the alarm module failed and that's why the car wasn't starting. He did not bypassed the immobilizer so I think it still requires to unlock it before he can start it.
Cum te pot contacta ?
salut! am avut si eu problema asta, dar a fost mai simplu sa scot siguranta. masina a ramas armata si nu mai pornea. am mers o saptamana fara siguranta de la centralizata, dar acum nu mai porneste deloc. ai vre-o idee? nu palpaie nici un bec, nimic.
Florin Fediuc nu pot sa no day seama
Am și eu aceasta problema la c250 1995
Am încercat aseară varianta ta dar nu funcționează plus ca nu are alarma a mea doar închidere, ce sfaturi mai poți da ? De o săptămână ma chinui sa o pornesc și nimic
ai rezolvat?
Hello man i have the exact problem create explanation!!! Them 4 wires that was cut connect the 2 boxes up aswell is that correct...? Purple/black-- and yellow/red
Yes, if I remember correctly, the 2 wires were going from the car cu to the immobilizer. By cutting them I bypass the immobilizer.
@@lupuization yes i done this but its intermittent starting i found...is yours completely starting everytime?
I put switches on each wire so i found what works and what didn't...i think iam just going to replace the immobilizer with a new one...i think someones already tried doing something to it anyway...
@@lupuization hello man i fixed it....its the mirror and a fault i swapped the old one with a new one and it works now!!! Finally...i put the wires back together aswell...it was the mirror!!!
@@UnknownUnknown-kz9nt Hi... Which mirror you mean please? I have same problem with my 96 e320, can you explain me please? Thank you
Hi I found the black box where is the alarm box
Buna. Spune si mie te rog ai pus ceva pe langa immo? Am acceasi problema. Nu stiu ce sa mai fac. Nu se mai aprinde la pornire ECU deloc.
@Dexter Lupu Dexter Lupu eu am w202 din 95, nu prea stiu ce cablu sa tai pe acolo.
Please Can I get thé bigin I have the problem
will this work with 95 2.2d?
Maux Erm have you tried that?
will this work on a 1997 e320
Clifford Jordan, did u ever find out if it worked on a 97 e320? let me know please, I have the same car/issue, please. Sonofthenun@gmail.com
Bro I looked everywhere and It's not in the location like the 96, Im go try again this weekend and will let you know
Clifford Jordan not sure. If there is a same setup then It should work.
Ahoj poslal jsem ti email ale nemuzu te najít na FB... posli mi nejaky link... diky Dušan
Can you send me that email to help because my 99c43 has the same issue No start motor not turning over . Key in ignition nothing happens only dash lights come on but I get a constant power to the yellow and pink or( light red) wire coming out of the back of the EIS
So after sliding down into a ditch avoiding a deer my 1997 Mercedes C230 won’t crank or start. I stick the key in and turn it and my horn starts beeping and I gotta immediately turn it back off. May it be a inertia reset switch or something of that nature? Man I’m at my wits end with this. Please help!
I have a 1997 c230 base sedan, will this work?
did you ever end up trying it out ?
We don't no this car bro
C what? 220? 230? 280?
Alex Peacock c200
Dexter Lupu thank you. I have a C280.
I so hope people don't go and seemingly cut off wires without knowing what they are!
This can only be a useless video as it doesn't explain why this worked
Seem to help some people...iam doing it this very second i managed it...its the yellow/red and purple black wires...these wires have 2 colours...your basically stopping 2 wires going into each box thats how i worked it out...thanks to this video i took screen shots and zoomed in to get what he was saying....he explains well i think
@@UnknownUnknown-kz9nt can u show my Email carfashion2@gmail.com
This has nothing to do with the immobiliser. You disable the DAS 1 immobilizer by unlocking the car via remote, which he did. It's not as simple as cutting 2 wires unforunately..
I'm also watching this since I don't like been held hostage for cunts over inflating prices just to start a engine of a vechile we already own