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Mercedes 2008-2014 C class No Crank No Start. You do have AC on lights. Not the ESL, maybe the ECM. 

Mercedes Benz Specialist
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Mercedes 2008-2014 C300 C250 C350 C63 AMG GLK350 SLK250 E350. Many others.
If you have dash lights when you turn the key to position 2. That is two clicks to the right. You have drive authorization. That means you are already passed the ESL, EIS, and key. They are all working. Now it's time to look at what happens after drive authorization.
It's very common to have a bad ECM that is not sending a ground signal to the starter relay. This video show you how to diagnose a bad ECM that is not sending a ground signal to your starter relay.
If you need a cloned ECM. We can help with that.
Call or text us at 818-510-3375
Or visit our website: mercedesbenzsp...
You don't have dash lights? Watch our ESL diagnosis video.
• Has your Electronic St...

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2 окт 2024

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Комментарии : 76   
@vdesg962
@vdesg962 5 месяцев назад
I am a mechanic and I found this problem on a 2013 Mercedes C250, a real problem, I searched hundreds of videos on RU-vid and I couldn't find the solution, the only video that is worth it is the one you published, if I could rate you I would give you a 100 🙏
@mercedesbenzspecialist
@mercedesbenzspecialist 5 месяцев назад
Thank you brother I appreciate it.
@glennbrown8213
@glennbrown8213 4 месяца назад
Excellent video
@mercedesbenzspecialist
@mercedesbenzspecialist 4 месяца назад
Thanks.
@dieseldawg7132
@dieseldawg7132 3 месяца назад
Man on the damn ground I have a 3v that is showing up…. I’m able to actuate the starter manually but the ecm won’t ground it out…. Where is the ecm located on this junk
@mercedesbenzspecialist
@mercedesbenzspecialist 3 месяца назад
@dieseldawg7132 I point the ECM out in the video.
@2007pi
@2007pi Месяц назад
Thank you soooooo much 🙌🏾 You saved my day 🙌🏾♥️🕊 God bless you
@mercedesbenzspecialist
@mercedesbenzspecialist Месяц назад
You're welcome, thanks for watching.
@TopSecretGarage2
@TopSecretGarage2 2 дня назад
Hi, I tried everything that you explained in the video. All the cluster light turn on, I hear the steering lock unlocking, I have ground signal at pin 85, have 12.5V at pins 30 and 86, but I don’t have power to pin 87 in the fuse box while someone is cranking. What could be? Please help!
@sauls8250
@sauls8250 3 дня назад
I have a 2015 mercedes benz c300 no crank, shift selector not powering up, the 30amp fuse to the starter is a stray ground. I checked with a power probe, and then I put power to the fuse with my power probe, and I get the engine to cranck. That's crazy I can see powering the starter relay but not the fuse. This car is a nightmare, nothing like I ever had before. Need help. A y Ideas would be greatly appreciated.
@shearac6032
@shearac6032 Месяц назад
Hi, I've got a e220 cdi but get no esl lights. Fuses are all good and relays but will be checking the connections and cables today. Is there anyway of removing the fusebox?
@Xjuijau
@Xjuijau 2 месяца назад
Do you have any other idea what could be wrong? C220 2010 no errors, everything lights up but still doesn't crank. It happens randomly never on a first start but after driving around. Sometimes it's good for a month and then randomly doesn't start again. After 30 mins or so of trying to start it does start. Tried continuity test and it does beep. Went to several mechanics but no one can find what's wrong. :/
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
@@Xjuijau Have you tested for ground at starter relay terminal 85 while it’s not cranking? Check for battery power at starter relay terminal 86 while trying to crank.
@TBJay
@TBJay 2 месяца назад
Hey 2015 Mercedes C300. Changed the key fob battery and the next day car wouldn’t start. It does a click at first but it won’t start all the dash lights come on the AC comes on and the radio just won’t start. Any guess what the problems could be? Guessing the starter is the problem.
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
Starter sounds like a good guess. Guessing is for fun. You can easily find the issue by testing a few parts. First battery voltage. Use a volt meter or take the batter to a parts store for a load test. It’s should be above 12.3 volts. Next check your starter fuse and relay. There are hundreds of videos on RU-vid showing how to test a relay. Test your starter. You can do this with a wire through your fuse box. Or go underneath and test it directly by bridging the b+ 13mm nut. and switch 10mm nut with a screwdriver. If you do those tests, you won’t have to guess.
@DefNotMyBurner
@DefNotMyBurner 11 дней назад
What do we do when the lights don't even come on? I have a W204 C250, and I had an issue with the ESL, and got it replaced with an emulator. I get a DTC that my ABS failed and the car won't drive too fast. I make it home and park, try to unlock the car in the morning, and I get no response from unlocking the car, to the point I had to call a locksmith. He opens it, the alarm goes off, and I put it in the ignition, and the car cranks on the first try. After that, I cut it off, go to Autozone, and come back. Car doesn't start and no lights on the dash. Only codes I've gotten is : C0031, P0705 So my symptoms are: No Dash Lights Car Won't recognize the Key Fob, even when inserted Front Left Wheel Speed Sensor Malfunction No Crank whatsoever Have yall ever heard of a wheel sensor making a car unable to start? I dont have ESL issues so what could it be?
@mercedesbenzspecialist
@mercedesbenzspecialist 10 дней назад
First you have to address the no dash lights. This indicates you don’t have drive authorization. There is a problem with one or more of the three components that grant drive authorization. The EIS, ESL, and key. If you don’t have dash lights. One of these is the issue. Contact me at 818 510 3375.
@zahariastoianovici8590
@zahariastoianovici8590 16 дней назад
I have similar problems for my c-300 from2012. Trying 5-6 times to start and light on board but did not crank the starter after a while and 5-6 tries it’s start. Happened this 2-3 times in the last week. Is this a sign that something is kind of found to die soon? Is this an indication that some relays or fuse or ecm is going to fail soon?
@mercedesbenzspecialist
@mercedesbenzspecialist 16 дней назад
@@zahariastoianovici8590 yes this means something is failing. It’s not a fuse, when a fuse breaks, it won’t work intermittently. It could be a relay, it could be the ECM. Do the test in this video when it’s not starting. If you get no ground at the starter relay as shown in the video. It’s your ecm.
@apples8869
@apples8869 2 месяца назад
My car problem is that i have lights and radio but if i try to turn on the car it does not start. But it sounds like it wants to start but it only last about 1 second. But if i charge my battery or jump start it it turns on. Went to autozone they said battery and altenator works. Could it be the starter?
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
@@apples8869 sounds like you may have a voltage drop between the battery and the starter. Or AutoZone was wrong about your battery being in good shape. Did they do a load test on your battery? Or did they just measure the surface voltage?
@apples8869
@apples8869 2 месяца назад
@@mercedesbenzspecialist he checked the voltage when it was off he said it was good then he told me to turn on the car and let it run for a 1 minute or so and after that the machine lights he had turned green.
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
@apples8869 I recommend you remove the battery and take it to an auto parts store that will do a load test. Best to be certain your battery is in good shape before spending time and money on further diagnosis.
@sidrajaved8375
@sidrajaved8375 2 месяца назад
@@apples8869Did you manage to find what the issue was?
@apples8869
@apples8869 2 месяца назад
@@sidrajaved8375 yeah it was my battery
@mikegodinez9047
@mikegodinez9047 Месяц назад
Battery voltage good, fuse good , tested for ground that was good, changed the relay.... & nothing .... someone help :(
@mercedesbenzspecialist
@mercedesbenzspecialist Месяц назад
When someone is cranking the vehicle, you should find ground at slot 85 and battery power at 86. Slot 30 should have battery power on always. If 85 and 86 have power and ground they will close the relay circuit sending battery power from 30 through 87 directly to circuit 50 (that's the circuit going directly to your starter solenoid. If you're wondering what slot 85 86 30 and 87 are. I'm referring to the slots in the fuse box located at the firewall on the driver side where the starter relay lives. Pull up the starter relay and you will find these slots. Your relay will probably have a diagram on the cover.
@mikegodinez9047
@mikegodinez9047 Месяц назад
@@mercedesbenzspecialist it was starter. I removed it. Got it benched tested. It failed
@edwardfowlow
@edwardfowlow Месяц назад
I chaged the battery and i was having the same issue replaced the battery and my car worked ever since note even tho my lights and power in the car worked the battery still never started my car but after i replaced it car is now working ever since
@mercedesbenzspecialist
@mercedesbenzspecialist Месяц назад
Yes, it takes a lot of battery power to crank an engine. A weak battery is one of the causes of a no crank situation.
@mikegodinez9047
@mikegodinez9047 Месяц назад
@@mercedesbenzspecialist Even with 12.5 volts?? Wonder if i should just buy a new batt
@Tru911s
@Tru911s 3 месяца назад
I changed my key fob batteries and now my car is not starting at all no dash lights at all no central locking too any idea ? remote fob is fine and main battery is 12.4 that's fine too
@mercedesbenzspecialist
@mercedesbenzspecialist 3 месяца назад
How do you know the key fob is fine? If it won’t start the car. You said “no central locking”. I assume you mean the fob does not lock or unlock your doors. If this is true, then the key fob has to be on your list of suspects. Along with the EIS, and the fuses that power the EIS.
@Tru911s
@Tru911s 3 месяца назад
@mercedesbenzspecialist tested the key with a mercedes key fob signal reader it's giving frequency each time we press fob buttons next to the piece of kit
@Tru911s
@Tru911s 3 месяца назад
@mercedesbenzspecialist I went back to the car after I changed the batteries then all of a sudden no central locking no dash lights no crank so random it happened
@mercedesbenzspecialist
@mercedesbenzspecialist 3 месяца назад
@@Tru911s What year and model is your Mercedes?
@Tru911s
@Tru911s 3 месяца назад
@mercedesbenzspecialist it's a w204 c350 CDI year 2012
@AdrianLopez-oo6gr
@AdrianLopez-oo6gr 2 месяца назад
So I had this problem I bought the emulator changed it out and now I have this problem with the fuse keeps blowing I put a new oem starter relay but fuse 7 keeps blowing
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
Check the starter directly. Bridge the b+ and the signal wire with the blade of a screwdriver. Does it turn?
@AdrianLopez-oo6gr
@AdrianLopez-oo6gr 2 месяца назад
@@mercedesbenzspecialist yes starter is turning
@rigoramirez2092
@rigoramirez2092 2 месяца назад
Did u figure it out bro?
@rigoramirez2092
@rigoramirez2092 2 месяца назад
@@AdrianLopez-oo6grI’m having this issue too
@AdrianLopez-oo6gr
@AdrianLopez-oo6gr 2 месяца назад
@@rigoramirez2092 I haven’t yet bro the start is good so I not sure what it could be
@killermonkey8382
@killermonkey8382 2 месяца назад
I have yellow and red dash lights, the car switches gears, fuse is good, relay is good, ground at 85, but still wont crank..
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
What year and model? What's the battery voltage? Have you tested your starter? Check for battery voltage at the fuse box Relay M pin 86, 30, and 87 while someone is cranking. Post your results.
@killermonkey8382
@killermonkey8382 2 месяца назад
​@@mercedesbenzspecialist2008 c300 2wd sport, checking starter is my last resort, the voltages are all below 4 volts.
@killermonkey8382
@killermonkey8382 2 месяца назад
After adding refrigerant and unsiezing the blower motor, the car stopped starting all of a sudden
@mercedesbenzspecialist
@mercedesbenzspecialist 2 месяца назад
@@killermonkey8382 4 volts? You should find the same voltage as your battery voltage. If your battery voltage is at 4 volts. That’s why you have a no crank situation. Battery voltage should be at 12.4-12.6 volts.
@killermonkey8382
@killermonkey8382 2 месяца назад
So i have to take the fuse box out and check the wires? Sorry im just a 17 year old kid trying to fix my car 😭😭​@mercedesbenzspecialist
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