Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes
This answer was rated:

I have a 2005 e500. The radio comes on with the key off and

drains the battery.If there is...
I have a 2005 e500. The radio comes on with the key off and drains the battery.If there is a cd playing it will drain it rather quickly. The radio goes off when i turn the car off but comes on later. I can turn the radio on and off without the key turned on. My solution was to make sure the radio was off when i turned the car off but the battery still goes dead even though i turned the radio off before i turned the car off. I took the car to a local repair shop and they could not find anything wrong with their diognostic equipment. Not sure what to do now. I live in Minot ND and will be in mpls next month. I have 65k on it and love it other than this problem
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 1 day by:
10/18/2017
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,078
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
Verified

Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

Ask Your Own Mercedes Question

the radio may be the cause of the draw but you also may have 2 separate issues.

what needs to be done is a parasitic draw test.

its where we shut the car off and lock the doors and test to see how much amperage is being drawn from the battery while at rest.

this is not a difficult test just tedious and the issue is not a lot of shops know the procedure.,

so the thing I recommend is to have the audio system software updated. this can only be done at a dealer and will take care of the radio coming on and off.

as for the draw I will attach the process so you can give to whatever shop you take the car to .

if there are any things you need clarification on or more info please let me know I will do what I can to help.

Please take a second and click the stars at the top of the screen to rate my service so I may be paid for my assistance.5 stars is ideal :) . Please save me as a favorite and request me in the future.Keep in mind that when you rate it does not end our conversation, all it does is pay me for my help. You can still return here to me for follow up information if needed just simply reply back, thanks!
Lou P.
Master Mercedes-Benz Technician
Master ASE Certified

Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,078
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
Verified
Lou P. master tech and 87 other Mercedes Specialists are ready to help you
Ask your own question now
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: 5,078
5,078 Satisfied Customers
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, 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

28,773 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

5,078 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

591 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

443 satisfied customers

Work and diagnose electronics on daily basis.

< Previous | Next >

Related Mercedes Questions
Battery dead can't unlock it. Can't get to the battery as
Battery dead can't unlock it JA: Did you test the battery with a voltmeter? And have you ever changed one before? Customer: Can't get to the battery as the car is locked JA: What is the model/year of … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
Do not wanna start. Battery is ok. There is a def countdown
Nope. Battery is ok. There is a def countdown and it says 0 … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
2003 Mercedes E320 Serious battery drain. Battery is
2003 Mercedes E320 Serious battery drain. Battery is draining within in hours after being fully charged.… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,000 satisfied customers
Car wont start but the Aux. battery malfunction is on in
Car wont start but the Aux. battery malfunction is on in display. I had the battery checked and its good … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
After disconnecting and reconnecting starter battery on my
after disconnecting and reconnecting starter battery on my 2007 s550 4matic, air suspension and 4 way flashers malfunction. were working prior. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Regarding that Mercedes --I didn't mention that the battery
Regarding that Mercedes --I didn't mention that the battery was completely flat and we had to jump the car to get her on her way but my wife only made it about 2 miles before the car shut off. Have no… read more
Marty
Marty
Mercedes Technician
Associate Degree
28,773 satisfied customers
After the battery died, the radio prompted for a code. The
After the battery died, the radio prompted for a code. The wrong code was entered on accident (have the right code and have successfully entered it before to get the radio to work). It has been stuck … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
I just replaced the battery for my 2003 e500, but my battery
Hi, I just replaced the battery for my 2003 e500, but my battery seems to be draining overnight. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
Disconnected battery because it was dead. Noe hear. Hear
Disconnected battery because it was dead. Noe hear … read more
Matt
Matt
Engineer
Bachelor's Degree
591 satisfied customers
Battery location on my C300 2014 auxiliary battery. I I
battery location on my C300 2014 auxiliary battery … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
Car will not start - New Battery everything appears fine but
Car will not start - New Battery everything appears fine but when I turn it start It get a humming sound but engine does not turn over. SMART CAR Passion for Two 2010 Mercedes Benze … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
Dead battery. Unable to open trunk to get to the battery for
Dead battery. Unable to open trunk to get to the battery for jump start … read more
Matt
Matt
Engineer
Bachelor's Degree
591 satisfied customers
Dropped my AGM battery on the floor, is it damaged? See
Dropped my AGM battery on the floor, is it damaged? See pics. The battery is not leaking and maintains full charge according to my charger.… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
Two things, my battery was dead, I replaced the ba battery
Two things, my battery was dead, I replaced the ba battery and now the radio won't work I have tried the reset where are you disconnect the cables for a half hour we connect then put the windows up bu… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
I want to change a bad battery. I can install the battery
I want to change a bad battery. I can install the battery myself. Are there any issues or codes that I need to consider. I am thinking about purchasing a replacement battery from I have. 2010 merceds … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
My cars battery was jump started, then replaced battery,
My cars battery was jump started JA: Will the headlights turn on? Is the battery fully charged? Customer: then replaced battery JA: What is the model/year of your Mercedes? Customer: 2005 ml 350 speci… read more
Marty
Marty
Mercedes Technician
Associate Degree
28,773 satisfied customers
Won't start. Not battery and not remote key battery. They
Hi. Won't start. Not battery and not remote key battery … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
5,078 satisfied customers
ML 320. How to remove the main battery. This battery is
This battery is completely flat. I have a new battery thats bin checked … read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,131 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