Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes
This answer was rated:

My alternator is not charging the battery although the

alternator is test that it...
My alternator is not charging the battery although the alternator is test that it is good.
JA: Have you tested the battery with a voltmeter? And can you see if it's leaking or not?
Customer: I just perched the battery I will check it now though.
JA: What is the model/year of your Mercedes?
Customer: 2003 S500 4matic
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I am looking for a diagram of the fuses... I can't seem to find one... My front cigarette light went out because a penny flipped into it so I'm thinking the fusible link is bad.
JA: Anything else you want the mechanic to know before I connect you?
Customer: I believe that's all.
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 29 minutes by:
7/24/2017
Pete
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 29,853
Experience: Over 15 years experience as a Mercedes dealer technician
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

My info is not showing a diagram of this but your alternator feeds and receives signals through the right front sam control unit ecu.This is the right under hood fuse and relay panel.Make sure all wiring is o.k. and that all fuses are o.k. and make sure all relays are seated.If these are all o.k. the right front sam control unit may need replaced and programmed.This sam can fail and causes this fault here in some cases.Try tapping on each relay in it one at a time and see if it then starts to work.If it does then the relay you tapped on needs replaced.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

Ask Your Own Mercedes Question
Customer reply replied 4 months ago
Can you tell me where I can find the diagram for the fuse boxes.... I don't have them any where in the car... I think if I could find those I would be ok.

I apologize for the delay.

You can get the complete wiring diagram of your vehicle and its components as well as the fuse charts from the link below.They do charge a small fee but the fee is good for one year.You can also order in a fuse chart from a local dealer in most cases as well.

https://www.alldatadiy.com/

Let me know if you need anything else and feel free to rate my help here or above ( should be a link to click on ) as this is how I receive credit for my time.Your 5 star rating is appreciated

Thanks Pete

Pete
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 29,853
Experience: Over 15 years experience as a Mercedes dealer technician
Verified
Pete and 87 other Mercedes Specialists are ready to help you
Ask your own question now
Ask Pete Your Own Question
Pete
Pete
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 29,853
29,853 Satisfied Customers
Experience: Over 15 years experience as a Mercedes dealer technician

Pete 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

28,952 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

3,708 satisfied customers

15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,131 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

598 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, 4 Drs, year 2002. Mercedes benz S500 4
Mercedex Benz S500 Year2002 everthing is ok, except right front dooe, the window glass is not moving up or down, How much will be the cost to fix? … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
I am looking to purchase a 2003 Mercedes S500, what are the
I am looking to purchase a 2003 Mercedes S500, what are the iphone, bluetooth capabilities? are there any? … read more
Les Hamilton
Les Hamilton
1 satisfied customers
I have a 2000 s500 that I can not get out of park and it
I have a 2000 s500 that I can not get out of park and it tells me to visit workshop because 3 light are on in the cluster. WHAT … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
I have a 2001 s500, changed out the brake sensor but all my
I have a 2001 s500, changed out the brake sensor but all my brake lights stay on and I can't get the car out of the park position along with the esp, srs and and light are all on now this occurred aft… read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
Why dose the 20 amp fuse keep blowing on my 1997 s500
why dose the 20 amp fuse keep blowing on my 1997 s500 climate control … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
2003 s500,car locks sometimes automatically. When use safety
2003 s500,car locks sometimes automatically. When use safety key to get in. Put key in ignition,will not turn. car wont start … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
2003 ML350. Replaced alternator and battery. Now car starts
2003 ML350. Replaced alternator and battery. Now car starts but stalls and can't be driven. I've read that it might be a key recognition problem. What are my options. I don't have another key now. Tha… read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
P only, I just drained the oil out of my 2000 S500, and the
This question is for Lou P only, I just drained the oil out of my 2000 S500, and the transmission fluid as well. Can you tell me what the correct oil/fluid is for this car?… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
I have a 2001 Mercedes S500. My Ac drain line malfunctioned
I have a 2001 Mercedes S500. My Ac drain line malfunctioned and ruined my control unit. I want to know the oem part number for the control unit and fuse box. Thanks … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
I changed both batteries and alternator and when I start
I changed both batteries and alternator and when I start car, it will not shift out of gear, radiator fan does not work, right headlight will not come on, and the code : "reduced braking power" shows.… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
No spark on one cylinder. S500. 94. New plugs, wires, and
New plugs, wires, and new distributor cap on the side that isn't firing.. … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
Had my 2000 S500 diagnosed and initially it said the
Had my 2000 S500 diagnosed and initially it said the conductor plate needed change as shift has begun to jerk sometimes when shifting. So a new conductor plate was installed together with a new tranny… read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
Will not turn over. 2001 s500. Checked all fuses all good
checked all fuses all good checked power at starter … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
293 satisfied customers
Where is the accumulated located in 1997 S500 W140. I have
where is the accumulated located in 1997 S500 W140 … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
I am having a problem with either my battery or alternator.
I am having a problem with either my battery or alternator. 2005 Mercedes e320 base model gas. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
It will not start. And no corrosion. 2000 s500. I have not
i have not tried anything yet. would like to fix myself … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
A warning light just came on that said "Alternative battery
A warning light just came on that said "Alternative battery malfunction". … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
S500 with dead battery. Can not open the trunk with
S500 with dead battery. Can not open the trunk with mechanical key. … read more
Gunvir Singh
Gunvir Singh
1,799 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