Mercedes bad Electronic Ignition Switch (EIS) diagnosis. 

I think you've nailed it there but I can't get anyone to listen to me and I don't trust myself with a soldering iron around things like this. The auto locksmiths just plug it into a diagnostics machine, wait for it to say there are no faults then tell me my car's perfect. It's most annoying.

@@samanthagames1023 the only other alternative is to buy a used one for £20 but then you have to pay reprogramming.

@@athanasiostsokanos6858 Thanks. Yes I'm looking into that at the moment.👍

Michael is an amazing individual and very knowledgeable. Would recommend 10/10.

Yes, I can diagnose it, and offer a solution. Call us at 818-510-3375

Yes the EIS does wake up several modules. But that’s not enough to warrant a replacement of the EIS as it is an expensive replacement. There is a good video by Chrisfix on how to find a parasitic draw. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-n5FJDgcdii8.html

VVDI is easy to learn and use. GCDI has a steeper learning curve, but it is more powerful. VVDI is also less expensive.

@@mercedesbenzspecialist I don’t about that , I’m finding the CGDI mb device for only around 600 euros , however the vvdi mb or bmw is around 700-900 so I’ve decided to just buy a AUTEL Im508 and xp400 pro for £1500 which has thousands of cars to do programming and eeprom work better all rounder and very user friendly , in fact a few key modules I’ve recently programmed for Mercedes w906 and bmw CAS3 have all been straight through OBD no need to solder wires and connect lap tops anymore : ) until somebody loses keys again

I am having the same issue and so far based on what the MB forums its pointing to the EIS I want to confirm before pulling the module

Also all the lights come on. Emergency lights headlights and they are bright battery is 2 months old. Asides from the key turning it’s as if no key is inside gets no response and when I crank to start position it does not click or make any sound at all

Battery is good. Ok that’s the first check. After checking to see if your EIS fuse is good, and checking for power and ground at the EIS. We can assume it’s either a bad key or a bad EIS. After checking the above ☝️ You can send us your EIS and key to get it sorted. mercedesbenzspecialist.net/shop

No. What year and model? When does the alarm go off?

It may be a bad key. Even though the RF function is working for the trunk. The IR function (starting the car) may have malfunctioned. The cost of a new key is 3-5 times less than the cost of replacing your EIS with a used cloned EIS. 10 times less than getting a new EIS from the dealership. Send me your EIS and key. I’ll diagnose it free of charge, and I will offer a solution. -Michael 818-510-3375

@@mercedesbenzspecialist Thanks Michael. It's late here, but I will contact to you tomorrow to proceed.

Yes I’m aware of this issue. It happens with the EISs that start with part number 212 xxx xx xx

No. If you have red and yellow dash lights on. You are past the drive authorization from the key. Next you look at battery voltage, the starter fuse and relay, the starter itself, and finally the ground signal coming from the ECM. I have a video on how to check if your ECM is sending a ground signal to your starter relay. It's done on a Mercedes C250, but the technique will work on any model. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3Ek8foTUl88.html

2001 s500 amg

You would need to send in your EIS and key. We would test them on the bench to find the issue. mercedesbenzspecialist.net/ Or call/text 818-510-3375

Yes I do. What year and model? What is the issue?

They most likely don’t have the tools required to erase a used unit. They are probably using Mercedes Xentry/DAS. They cannot virginize a used switch with Xentry. I don’t know the condition of your EIS. I can’t tell you why they can’t get the data from it. What year and model is your Mercedes?

Hi. The engine turning off while driving (I know.. scary). Is usually caused by either a faulty Engine Control Module (ECM) or a faulty Electronic Ignition Switch (EIS). You said it took you 5 minutes to get any life from the ignition. Does that mean, absolutely no response when you inserted key into the Electronic Ignition Switch (EIS)? No audible "ding", no change in message from the instrument cluster? I believe your CLK has a Electronic Steering Lock (ESL). When you inserted the key did the ESL unlock? Or did the steering wheel remain locked? When you turned the key two full clicks to the right. That's the position in the EIS just before the crank position. Did you have red and yellow dash lights on the instrument cluster? If so, did you get a no crank when turning the key to the crank position? Answers to these questions will help narrow down the issue you are experiencing. -Michael 818 510 3375

@@mercedesbenzspecialist Thanks for the reply. In this case no response means no noise from a starter motor or clicking from relays. I'm not sure whether the steering lock made a sound or whether the lights on the panel were all out because I've only had the car a few days and I was a too shocked to make a point of checking but I expect all the lights were off because there were no signs of life in terms of a response from turning the key. I've been trying to recreate it ever since but all I've experienced so far today is the engine cutting out whilst idling - which for a diesel car is extremely rare without an ignition fault (or I suppose a fuel supply fault ) but that would show up on the diagnostic checks wouldn't it?

@@samanthagames1023 Ok so nothing from the starter rules out a fuel supply issue. If you have no dash lights when you get a no crank, you're looking at a Drive Authorization System (DAS) problem. That's gonna be the EIS, or key in your situation. If you have red and yellow dash lights but no crank, you're likely dealing with a ECM issue.

@@mercedesbenzspecialist Obviously I know it's not a fuel problem and as I said in my original comment I think it's the EIS. But what you said about the red and yellow lights is helpful because if it was the EIS there would be no lights on at all would there? I hope it's not the ECM because that sounds like more expense than the car's worth. Thanks very much.

@@samanthagames1023 it’s expensive if you go to the dealership. We charge $250 for ecm programming. Plus the cost of the used donor unit.

Did you ever do this? Does it work?

@@RyanONeill-fh3xl Yes I got it to work before the emulator you're using is older style the new one looks exactly like the old steering actuator and it works right away once you copy the data but it seems it's an EIS issue

Yes that’s correct.

E550

What year? What issue are you experiencing? No crank? Key doesn’t turn? Have you tried a spare key?

@@mercedesbenzspecialist no spare key sir and ignition won't turn at all had to pull battery cable to get car to turn off key is stuck in position #2

@@gregfletcher5279 what year?

Yes I can help. If your EIS is bad, I can clone it. Call us at 818-510-3375