Fix For Mercedes Key FOB Not Working
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- Опубліковано 17 вер 2017
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Mercedes-Benz key fob not working? You need change the keyless remote battery. Is your Mercedes key fob not working after a battery change? This video will help you troubleshoot problems where the Mercedes key fob doesn’t work or no longer unlock/locks doors or trunk. In most cases, the key can start the car but not work as a keyless entry remote. Usually when Mercedes key fob is not working, it’s because either because the key is defective or the All Activity Module (AAM) is not recognizing the key signal, or it is not receiving signal due to an antenna issue.
Mercedes key fob not working after battery change
Mercedes remote doesn’t work anymore
Keyless remote doesn’t lock/unlock the car
Mercedes key fob won’t unlock doors
Panic button doesn’t work
Trunk unlock doesn’t work - Авто та транспорт
All I want to say is THANK YOU. This video saved me perhaps few hundred $ as I was never able to get a straight answer from either the dealer or any other local automotive locksmiths (the dealer wanted me to buy a new key). So one pair of my 2008 ML320 CDI key had stopped working (will not unlock nor will start the car) about 3 years back and since this is mostly a in-town car, I kept using the other working pair, until today. I followed the steps outlined in the video and found out that the 'broken' key had both the LED and the infrared sensor operational and they worked exactly as shown here. Next all I did was put the key in the ignition and within few seconds the car display showed "Key check-in in progress, please wait" message (Btw I didn't press both lock + unlock buttons prior to inserting the key in the ignition). Within seconds my 'inoperable' key came to life and now once again I have a working pair. Btw, I didn't have to change any fuse as one key was always operational. Thank you again and keep these great videos coming. God bless
Thanks a million!! My FOB for my 2005 SL 55 AMG wasn't working and I thought I had to go to the dealer and pay whatever they were going to charge to correct it. Luckily, I watched your video! I put the FOB in the ignition for a few seconds, took it out, then pressed and held the Unlock and Lock buttons together for 10 sec then pressed the Lock button 5 times and it worked! Much appreciated.
The hold down for 10 seconds thingy worked a treat. Thank you so much for uploading this tip. Invaluable.
Thanks for the info. The infra red trick with the camera has saved me checking the rest of the car for my unlock issue. I now know that it is my key fob that has a fault. Brilliant.
Thank you - this was extremely helpful! I didn't realize you could check the Infrared signal using your phone camera either - that is an extremely useful trick for all IR remotes!!!
4 years later and you're still saving our butts! Thank you for the video. The recalibration was perfect. Put the FOB in the ignition for a few seconds, then press and hold the Unlock and Lock button for 10 sec then press (in my case a 2000 E320) the Lock button 5 times and it worked! The flashers flashed a few times and it was recalibrated. One little thing, when I opened the door with the key, the alarm went off. I put the FOB in the ignition and it went off.
Thanks again!!!
Each ? 10 seconds each?
@@jasmineshabrell3878 together /simultaneously for 10 seconds 👍🏻
Omg I kept the key in the ignition and held down the lock button and it worked! 🤦🏽♀️ omg thank you 😊
this is the perfect fix for me, i swapped the computer battery in my 2007 s550 and didnt know i had to resync my keys, thanks for the help. wish i knew this before i spent money on new key batteries.
Great video! You just saved me a very expensive trip to the dealership!
Hello Mr.iRepair! Thank you so much for this simple straight forward information! Trying to figure out how to fix the lock system on my Dad's ML350! and it worked!
Wow! Thanks! My fob has been inoperable for 2 years. Changed the battery initially and that did nothing. I modified your instructions a bit. I actually started the engine with the inoperable fob rather than just putting the key in the ignition. I turned the car off and held the open and close buttons down on the fob simultaneously for 10 seconds. When I released, the car made 2 clicking sounds and the fob is now working.
That's awesome. Buy me a beer when you see me! 😎
Hi friend. The FOB was working with IR before? (Open pointing at the door) Thanks.
Ty sir
Change my batt as well car still not unlocking but wen I get out it unlocks
Thank you so much for this video!!! Dropped my key in a little bit of water. Took the key apart and let it sit in white rice for hours.My car wouldn’t start but the doors unlocked. I watched this video and found out It was just a fuse!! Save me hundreds of dollars!!! Thank you! I just subscribed!!
Glad you were able to solve your issue! Thanks for the kind words.
What fuse ?
Thanks buddy from the UK, the spare remote works perfectly now!
This was so helpful thank you!!! I have a 98 c230 and this is what's happening
I am new to dealing with Mercedes-Benz thought that all was lost this morning until I saw this video thanks so much
Thank you, thank you, thank you 😊 I feel so knowledgeable now about my car ❤ I know now why my doors wouldn’t lock, dead batteries, no red light no infrared. You saved me money 👍 I thought I had to buy replacement keys.
you dodged a bullet! i am in the same predicament now! now red light no infared! key works to start car but not to lock doors /unlock after installing new 2025 batteries
Thanks for the video, Sir. Really clear.
The re-synch tip worked for me.
Live and learn ...
Cheers from Nottingham, England.
Thank you!! This saved me some towing money. Lint at the bottom of the FOB blocking the infrared.
Hello my friend. I just wanted to thank you for sharing your knowledge. My issue seems to be with the infrared signal. Would have never thought to check that. Many thanks again. Tom
How did you fix that ?
@@anwarvarghese5730 did you find out ? Was it replacing the fuse he was talking about in the video ?
@@anwarvarghese5730 so what happened did we get an answer boyz??!! im in the same boat how we going to fix this damn infared problem! man! niiu im broke!! 😂
Holding the lock & unlock button fixed it for me thank you!
Thanks for the hints...it really worked magic.
Very useful! Thanks I have a ML320 from 2009.
Thank you you video helped us with the same issue and it works great now
Helped me with my 2009 B class, but the fuses are not in the back. Couldn't find the fuse, but fixed my key and later linked it with the car. Saved me 200 bucks
Thank you for sharing!! Will try and hope it works.
Thanks the holding down for 10 seconds worked.
Hello Keith my name is Deon from SOUTH AFRICA I just bought a 2002 w203 C270CDI I enjoyed watching your videos I have subscribed .
Thanks for video. I discovered metal pick works great for clip. Camera trick, thanks too!
great info bro
Thanks man this worked. Great advise :)
Thank's bro. Whit your advises i repair my radiofrecuency antena(long distance). God bless you folk!!!
Pls bro hw do you repair your long distance radiofrequency antenna? Pls help out.
When I move closer to the car it locks and unlocks, but at the range of 4 to 6 feet back, it would never work
@@akinfolarinibukun8062 check yo battery mon they get weak and shorten ya range
I have changed my battery but the long distance lock and unlock gestures still do not work. Grateful for any solution
good video man needed that info
Fantastic video really has helped me with my c class.
Totally worked on a Mercedes Sprinter - thanks :)
Thank you so much for this video! The recalibration just saved me time, and money, that would’ve otherwise been wasted at a dealership.
I had the same issue yesterday but, today I was able to open my 05'
SL500 with the manual key. Usually I hear the ring of the door being
open but, I not this time, the dash was blank but was able to start the
car and drive around the block. When I parked the car it was able to
lock with the remote? any suggestions are appreciated.
Hello I just bought myself a 2005 CLK 500 and I've been having an issue where my key sometimes will not turn so I'm in the process of cleaning the fob itself could this possibly cause the main electrical to turn off while driving and this includes the instrument cluster environment control and radio everything quits but my windows. Also oddly enough the car continues to run I have power brakes power steering and the windows of course that's it thank you.
I have the same issue , do you know which fuse is for w204 250 cdi model 2007?
Thank you for your informative videos
Wow 🤩 u r my Hero!! My Merc dealer in Anchorage wanted $1100.00 (totally outrageous) ridiculous! I can’t believe it worked and my husband thinks I’m a genius!!
Glad this worked for you!
Thanks for the video. Great. I have a 2016 Gle 400 and the display comes up with fob not found. Battery is good but can’t see the infrared. The second key works fine. Did you thinks it’s the fob itself? Many thanks
Thank you for this...a little update.
If you try the "both button hold down & 5 press on the unlock " it will reprogrammed the key..BUT...you have to put the key into the ignition and the dash will say " re-calculating"
The dash will return to normal after completing and its all good from then on
Really Informative!!!!!
I have a 2001 E320 and neither keybob is working to lock or unlock the doors or open the trunk. They do, however, turn on the alarm. I tried the recalibration method you mentioned and they still don’t work. I have 3 fuse boxes, which are not labeled so I don’t know which one is for the antenna and my Manuel doesn’t say which fuse is goes where. Any suggestions, please?
Thanks for this
That was really helpful. I have a 2014 C250 and her panic button on my fob isn't working...help! 😥
I have a 2015 ML350 with this same issue... can you please tell me where and which fuse? I have searched high and low and many things have changed with the fuse boxes. THanks!
Thanks! Great video. Just re synchronized my key!! Works now!!!
Whew thank you🙏🏽🙏🏽🙏🏽
Hello
I followed your video trying to unlock my Mercedes mL 350. The lights on both of my key fobs but still not able to unlock. So I tried opening the door manually and the lock will not come up after a few pulls. Any suggestions..
Thank you, Sir
Hey I love watching ur vids and I just wanted to toss some random wisdom around the key that's hidden inside of the fob is called a valet key
He showed it guy lol
Thanks for the information, but what fuse number if a 1999 e320 Mercedes Benz????
Great video ! my FOB does not transmit Infer Red light even I cleaned inside the FOB. Is my FOB is bad?
This is a great troubleshooting vid. Question is, if any of the early steps is true, how to proceed? In my case the buttons work only intermittently, so there is sometimes, but mostly not, an LED and an IR. Can the buttons themselves be repaired? I just bought this 2003 E320, it looks like the (only) fob was run over 😢
Many thanks
Good evening.. I have a 2005 model W169 A170 and everything works, but my steering doesn't unlock, therefore I can not start my car, because the steering is locked.. I need help please, which fuse do I replace because my fuse box is located under my feet, driver's side, (RHD)
🙌 IT WORKED!
Thank you for sharing you information!
My 2006 ml 320 the passenger luck don’t go down... can u tell me how to fix it ?
Hi .. I have 2006-C280 4matic. Both my key fobs looks good. Battery changed & even I synchronized keys. Issue is both Infra red key fobs sometimes work sometimes don't. Yeah bit strange but it acts funny. If it doesn't open door in first attempt then even if I try hard & multiple angles it will not start. Any idea what's issue?
I have two key fobs. One works but the other doesn’t. Does that mean basically that fob is bad? Any advice thanks.
Hello, hopefully you’ll be able to help me and respond ,also thank you much for putting out the videos, I have a SLK320 2004,
I’ve recently bought the car, there are a few bugs that I am trying to get out. One of them is the key fob, I have replaced the batteries and they are positioned properly. The lights work on it, I’ve checked the fuses in the areas of the engine compartment, the left/Right sides, also next to the steering wheel, there was a diagram that said there were fuses on the passenger side right next to the globe Department did not find that, did not find any fuses in the trunk, if I saw correctly, the antenna for the fob is in the trunk did not look at that yetif all of the wires are connected to it, what else should I look at?
Will this work if my issue is that my car won’t start. I put the key & No dash lights pop up or beeping sound, only doors work open & close. Trynna find out if my key is not communicating with my vehicle ignition ,
will this help start my vehicle again the 10sec instructions?
Got a w210 e320cdi estate 2000 plate been fine. Parked up but had to move. Fob wont open or close doors
Key wont unlock steering so can't start. Fob key flashes red. What can I do?
*****Thank you so much Buddy, its certainly HELPED ME, MY Mercedes key fob Button Locking problem sorted, you are A STAR.*****
Hey friend, I have a 02 cl55. Do you know where this antenna fuse is located on the cl? I haven’t seen a fuse box in my truck?
I have an 2000 e55 amg and It doesn’t have a fuse box in the trunk so where is the antenna module AAM fuse located in my car ? Thanks
Hi so my problem is with my 06 cls500 key fob was working just fine sat the car down for a week go to unlock it an nothing changed the battery in the remote I can see the red led light up when I'm pressing the lock/unlock trunk release buttons but checked the Infrared signal with a camera an nothing,, is the remote junk can it be fixed? It does look like a aftermarket remote i believe
thank you!!!!
I have a e350 2011 I changed fuses and put new battery do u have a answer on how to fix it only locks wen I get out and close tha door if I'm outside and press locks it won't open
The only thing the batteries work is the lock/unlock/truck release. Anyway. What starts the car is when you insert your fob in the slot to start it you hear the steering wheel unlock. What that is is the EIS. It is magnetized and inside your fob at the end on the circuit board near the infrared light on one side is a copper coil which gets energized and that makes the 2 infrared boxes light up (you see it as one light on the outside via the camera as you showed) and sends info to the car verifying it’s the correct key and it unlocks the steering wheel allowing you to start you car. Part of Mercedes anti thief feature. Now my car won’t start because this copper coil is broken off on one end. I’m in process of repairing it. I’m just waiting on my solder kit to arrive via Amazon. And I’ll reattach it and hopefully it will work. Or else I have to get a new coil they sell on eBay
Man, I just fixed my S550 key fob. Thank you for the help. Like and subscribed 👍
What year? I got a 09’ and it starts the car, but won’t unlock the doors
10:45pm est. Good evening Sir. First let me say thank you for the videos you put out, you’ve helped me with multiple issues over the last couple years. I’m just wondering if you’ve worked on this issue with a laster model ML 315 as my 2015. I’m having the same issue and I’ve tried everything in this video.(except having the module scanned) Also there’s not a fuse box in the rear anymore. I’ve checked the other three fuse boxes, but not sure which fuse it would be in those. Besides scanning the module is there anything else you can suggest? Thank you in advance for any help you might provide! God bless!
Hey Keith hope all is well? You'd mention in this video that the key fobs work off the antenna are you saying they work off the radio antenna module located inside the back tailgate?
I have a 2003 SLK 320 i have two of the keys but dont have the remote key were can i get the main key from
What does it mean when there is no light when I press any button, but the fob is working. Batteries are low?.. thks..jc
Hello there. Recently I replace the batteries but no luck. The lock and unlock buttons work, but the key don't engage to the car. I did the test with the camera and i don't see the red infrared light
Any ideas
Hey buddy my remote doesn’t work when the weather is too cold , such as 42 degrees F or lower
Any idea ?
KISHORILAL KISHOREDA need a new circuit
This is an EIS issue. Look it up known issue
Thanks for the video. So I checked my keys, and the problem seems that the red light works only every few clicks.
All 3 of my keys, and they all have fresh batteries. When the red light flashes, the IR works. Thank you.
My c230 won't go over 20mph I'm told it will be about 2200usd to replace trans computer or whole trans is there anything else that could be the problem before I pay that cost
I have an SLK from 2006, what fixed my problem was screwing back the arial. I unscrewed it after going to the car wash...... Toke a while before I knew that was the problem.
you are best🎉🎉🎉
I have a 2002 C32 and chrome key stopped working after it slipped out my hand and hit the floor. I have 2 other keys so it’s now I’d like to figure why it don’t work out of my 3 keys 2 don’t turn car on I put it in ignition and it won’t turn.
Hi there. I recently purchased a Mercedez 2002 SLK230 Kompressor and I would like to obtain 1 or 2 extra keys and FOBS before I lose one. The dealers are outrageous. And they say the car will be ruined forevvvver if you program it with anyone besides them. Any suggestions to obtain a couple and get them programmed. I have 2 originals now, but I misplaced one somewhere in the house.
I have a no crank no start issue that is intermittent. Can you do video on that?
Legend
thank you, it was my fuse
Glad you're able to solve it.
iRepair Autos I have a c300 benz work start at all. Dash board telling me to take key out ignition. Radio works fine and lights work fine
Eustace Elms that’s electronic lock system failure ur in for costly repair unfortunately is a problem w the cars more electric problems than actual mechanic problems
even though it was the fuse did the fob still light up before you replaced the fuse?
Hello. Mercedes Bclass 2010. Are you still giving advice. My fob is ok as far as battery is concerned.
I opened drivers door with the key. I reset the ?AAM by pressing the buttons as shown and still by inserting fob car is dead. What next? PLEASSSS
First of all thank you for sharing. Second after 10 seconds I hold the 2 buttons what after it? It's not clear what you said. Thanks.
Check the fuse first, if it is ok it SHOULD show some i signs of life by locking / unlocking the car.
i was playing around with this thinking why it is not working and what are my next steps without checking main step - FUSE.
Nice video. I have a 2003 SL500. Key works sometimes. It only works when key fob is next or near door handle. The key does light up the red circle. What could cause this?
Might be an infrared key that works only from not so long distances
Thank you soooo much! The hold both down worked!!!
Mooi
Great video. My key fob red light works most of the time when I push the unlock button and the infrared works as well. However, neither lights work when I use the lock button. Twice in the last three weeks, I had to press the unlock button many times to get it to open. Any ideas would greatly be appreciated.
And what was the reason??
I have the same....( urgent)
Thanks!
@Mohammed Talha okay thanks... I did, brandnew... I guess its something else... I will find it. Thanks
@Mohammed Talha hi can you share the video if you have it ? I can’t get into my s550
i have a 2002 C230 kompressor. the red LED light works, but i tried using my camera to see the infrared, i didn’t see anything. would i still need to replace it?
+Chaleisa the infrared is responsible for sending the commands to lock and unlock the vehicle. Do those functions work?
My infrared doesn’t show but I can still lock and unlock doors but I can’t start it,,won’t crank
@@mrHimothy2114
Did u ever found the problem on your vehicle ? I’m having same issue I’m able to lock and unlock my doors, but car won’t crank no start not even dash lights are popping up.. if you was able to fix your vehicle let me know what was the problem and how you fix thanks
I bought a push button key fob after market off line but I cant get it to sync ..is there anything I can do to sync it so I can use the push button insted of the actual key fob
nick dore hey I did the same thing we’re you able to fix this issue?
The car "picks" up the signal when you press the lock or unlock buttons, as there is a small buzzing noise that lasts for approximately 5 seconds. Although, the doors do not lock nor unlock with the fob. I can still unlock and lock it via the Mercedes me app. Help?
I have a 2007 Mercedes-Benz e350. My remote is not working to open, lock and start. I am stuck what do I do now? please help. thanks
I just replaced the battery on my Mercedes Benz. Now the car cranks but won't start. After like 5 tries it will start. Keys have new batteries and unlock everything. Fuses work. Auxiliary works.2018 Mercedes-Benz GLA 250. Need help.
What do you do if the battery was just replaced, and no light comes on??
2004 Mercedes ML 350 fob which looks different to the remote in your video.
Check the connection points to the battery to see if they are corroded ouie broken. Check to see if you've turned the battery in the wrong way.
It didn’t help me 100%, but it did guide me in some tests. Who the hell knew, to use my phone to look for UV Light? Well, obviously this guy did. I narrowed it down a bit, and off to the shop next I think. I have a 2015 Sprinter Van, with about 10K on it. The other key, works well
If the light on fob is not bright does that mean the battery needs changed? Sometime it takes 3 trys to get car to start and once its started if i turn it off it wont start right away sometimes.
The light does indicate battery strength in some rare instances. Change your battery. Also make sure that the infrared port on the fob is clean. Do these two things and let me know how it goes.
What if the red LED light is on the FOB but the car will not unlock with the manual key ?