Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

S500: W220 2001 S500 will start and drive, but nothing works,

Customer Question
W220 2001 S500 will start...
W220 2001 S500 will start and drive, but nothing works, turn sig., ac,.door loc., airmatic, and will not shut down when the key is removed. You have to remove the relay to shut it off. Then the brake lights stay on and the fan runs until you remove the battery cable.
Submitted: 2 years ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 3 minutes by:
7/1/2015
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,874
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
Verified
Hello my name is ***** ***** i will do my best to help you , i strive for EXCELLENT service and nothing less.did this happen after a recent rain ? Or car wash ?
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
no
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok, what rekay are you removing? it sounds like the communications system or one of the front sam's have failed.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
The starter relay
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
what happened first? what sympton? was the car jump started? can you explain when and how this all happened, i need to get a feel for what is going on, this is not a common issue so it will take some thinking and diagnosis.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
Just started it to drive to work and a big red battery image comes on in the display on the dash and tells take to work shop. Drove it to my body shop and it would not shut down until I removed the relay
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok, great, so start the car and see what voltage the battery is charging at.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
13v
Customer reply replied 2 years ago
I installed a new battery
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok, did you just check it or are you going off of what you checked before? i need us to both be on the same page, and understand that when i ask of something it is definitely going to help with diagnosis, so heres what i need you to do, start the car and see if the warnings are consistent and the car contnues to run with the key turned off, then check the charging of the battery while its running, it has to be more than 13.0 but LESS than 14.8
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
I forgot to mention when you turn the key off to shut it down the key will not turn on until you disconnect the battery. It more than 13.0 but less than 14.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok , so this happens every-time the car runs?
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
Yes, but now the air has leaked from the air ride,so you cannot drive it.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
the link is the passenger side SAM, let me know where you are pulling the relay from, the starter relay is relay L and in the diagram if the relay was the issue the starter would continue to crank,
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
If X is toward the firewall the L is the one
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
x is toward the front of the car
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
and this is the fuse box on the passenger side of the cars engine bay
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
Yes that is the one that shuts it off
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok, but to reiterate, the X is pointing towards the front of the car, not the firewall. we need to confirm on this
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
if L is indeed the relay, then remove the relay and see if the car ignition turns on and off with no issues, it will not crank but at least we can see what happens.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
Yes, that is the one, the layout of the box looked different, sorry
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
arrows always point towards front of car
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
The key will not turn until you remove the battery ground and replace
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
even with the relay removed?
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
yes
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
remove the positive and negative cables and touch them together, it will drain all the control module capacitors, it may help, but just want to be sure, its called a global reset.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
I have tried that
Customer reply replied 2 years ago
Everything leads to eis, but I still do not know why it will start and nothing else works
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
yes i was going through the diagrams and you are on the right track , eis is the common denominator.
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
eis is responsible for turning on the circuits to the control modules. so if have the car works then that is a very probable scenario
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
but normally the key will not turn in the ignition
Customer reply replied 2 years ago
could it be the ecu ?
Customer reply replied 2 years ago
or the ecm
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
i agree most eis fails to where it wont turn, but the fact that the key will not be released tells me eis all the way. i dont see the engine module causing this and when you say ECM it is vague lol, as this car has 25 control modules all with specific names.
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
i think we are on the same page, i vote EIS. hope this helps. the diagrams all point to eis. if you want to double check, start the car and in the passenger side fuse box, use a test light and tell me what fuses do NOT have power , that may help diagnose further, but the only thing that can affect the key not coming out or starting the car a second time, is the eis. hope this helps.Please take a second and click the box and rate my service GOOD OR EXCELLENT SERVICE if you feel I have been helpful and please request me in the future. If you feel I have not been helpful please DO NOT RATE BAD OR POOR AND WASTE YOUR MONEY , I will opt out to see if another expert can provide more or better assistance so you're not wasting your money!!. Thanks for choosing just answer. Lou. also , if you feel i deserve one , BONUSES are GREATLY APPRECIATED ! 😉Keep in mind that rating me does not end the chat, it simply credits me for assisting, i will still be here to help if follow up information is needed , Lou.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
You can switch the key off and even remove it from the switch and it still runs
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
ok then try this, pull fuse 78 in the passenger side DASH fuse box, its on the outside where the door meets the dash , start the car , shut the key off and remove it and then pull the fuse.
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
you can remove it and put it in your pocket and it still runs
Customer reply replied 2 years ago
Is that the 7.5 fuse ?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
yes
Ask Your Own Mercedes Question
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
sorry my refresh on the computer is slow today for some reason
Ask Your Own Mercedes Question
Was this answer helpful?
Ask Lou P. master tech Your Own Question
Lou P. master tech
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,874
5,874 Satisfied Customers
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Lou P. master tech is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

29,009 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

5,874 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,131 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

602 satisfied customers

Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
Mercedes-Benz S500: Central locking stopped working.
Central locking stopped working on my Mercedes-Benz S500 1999 model.… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,131 satisfied customers
1997 Mercedes benz S500: yesterday and the radio has CODE
I just purchased a 1997 Mercedes benz S500 Vin#WDBGA51G3VA373960 the battery was removed yesterday and the radio has "CODE" in the display and its not working. Pls help.....… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
S500: Good Morning! I have a 2000 S500 mercedes. The airmatic
Good Morning! I have a 2000 S500 mercedes. The airmatic pump will not come on to raise the vehicle. I've checked the fuses and replaced the relay in "O" slot in fuse panel passenger side panel. I do n… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
I have a 2000 Mercedes s500 when parked overnight drop to
i have a 2000 Mercedes s500 when parked overnight drop to the ground on all 4 corner and when start the engine it goes up to normal height in 30 second and stay up all the time . is it safe to drive? … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,874 satisfied customers
Wills. Unfortunately I have a s500 mf jkuly 2005. Put in new
put in new battery fixed everything then left the car 4 days battery went flat now nothing works again does start but no radios nav or presafe etc. now the a/c is intermittent. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,874 satisfied customers
2000 s500 check engine light, diagnosed by my mechanic as
2000 s500 check engine light, diagnosed by my mechanic as spark plugs. I changed the plugs with new Bosch plugs, cleared codes and light is still on any ideas to clear it? … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
2000 s500 stick the key in lights come on but the engine
Hi.2000 s500 stick the key in lights come on but the engine does not turn over.i got a new battery and the starter works.also when the key is on it wont shift in to neutral. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
2006 s500 trunk issue. Fob and inside switch and outside
Fob and inside switch and outside switch near key don't open trunk. … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
Electric locking won't work. 2003 S500. I was told it was a
I'm at the parts store and need to know which fuse … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
Door dont unlock or lock. 2005 mercedes s500. There was a
There was a rat under the carpet that had made the car stink so i disposed of it had to remove seats which the doors were constantly open and i decided to get carpet shampooed… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Am trying to open my 2006 s500 Mercedes with dead battery
Am trying to open my 2006 s500 Mercedes with dead battery with no luck … read more
EuroDoc
EuroDoc
Owner
Bachelor's Degree
1 satisfied customers
I have a 2002 s500 the car has been parked for 3 weeks the
I have a 2002 s500 the car has been parked for 3 weeks the remote does not work i have no power but the battery is good i did here a buzzing sound for a while. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
s500: 2000 s500 will not crank. The dash cluster illuminates
2000 s500 will not crank. The dash cluster illuminates when key is installed; however, no instruments values appear in either key position. I've checked all fuses, battery and ground connections which… read more
Hipo64
Hipo64
Mercedes Technician
High School or GED
444 satisfied customers
Mercedes-Benz S500 I have a 2000 S500. I have both electronic
I have a 2000 S500. I have both electronic and both metal keys. I parked it and didn't get back to it until the battery was dead. When I boosted the battery the alarm went off. I silenced it by using … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
How can I disactivate the alarm on my 1995 s500?
How can I disactivate the alarm on my 1995 s500?… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
How to change steering wheel control buttons (4) on 2003 s500
How to change steering wheel control buttons (4) on 2003 s500… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
s500: I would greatly appreciate if someone can please help
I would greatly appreciate if someone can please help me out. I have a 2000 Mercedes S500, w220. We installed a GPS tracking device on the car, the 12v wire was attached to the power wires for the ESP… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,131 satisfied customers
2002 Mercedes Benz S500: hazard lights and all the buttons
I have a 2002 Mercedes Benz S500 and the hazard lights and all the buttons to the left and right of it do not work. Please help me… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,009 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x