Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

Hahaha. A 2008 r350. Started hearing a crackling sound

Customer Question
Hahaha. A 2008 r350...

Hahaha. A 2008 r350. Started hearing a crackling sound through the speakers even when the car was off. It was intermittent. Parked in a garage and took the train. When I came back a few days later the battery was dead. That's been about 6 weeks ago. The crackling sound has stopped, but yesterday, after not driving for 3 days, the battery was dead and the clock was spinning backwards even when the key was not in the ignition. Probably the original battery.

Mechanic's Assistant: Did you test the battery with a voltmeter? And have you ever changed one before?

We have not tested the battery with voltmeter. We have it on a charger now and it's reading low. We have never changed one before.

Mechanic's Assistant: Are you fixing your R350 yourself? What have you tried so far?

The only thing we've done so far was jump start it several weeks ago and put it on the charger now. Wondering whether the sound that I heard through the speakers (both with radio on and off and car on and off) has anything to do with the problem. Would hate to install new batteries only to drain them. Have you heard of that problem before. My husband is a very good home mechanic and my son has some formal training, but neither have Mercedes experience. My son is ASCE and BMW.

Submitted: 11 months ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Customer reply replied 11 months ago
Also the manual door key won't turn to unlock the door (needed when car battery is dead). Have never had to use it before.
Answered in 1 day by:
9/24/2017
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 11 months ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,272
Experience: 20 years Master Certified excellent fix rate and have access to factory 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
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 11 months ago

the cracking noise was is because of a failed amplifier. it will start to make sounds through the system. there is a software update for this issue that only mercedes can do as we have to use the scan tool along with a update cd to perform the updates. this will definitely have an impact on the battery drain issue.

in order to unlock the car with the key its a little backwards then what everyone is use to.

we have to insert the key, and turn it to the left.

while you are holding the key to the left you then pull the door handle very fast with a little force and it will pop up the lock knob, then let go of the door handle, and then let go of the key and then you can open the door.

hope this helps, please let me know if this helps and if you need more info or not, 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 5 stars if you feel I have been helpful , rating is just as important to me as your issue is to you. Please request me in the future. Keep in mind that when you rate it does not end our conversation, you can still return here to me for follow up information if needed, Thanks for choosing just answer. Also , if you feel I deserve one , BONUSES are GREATLY APPRECIATED! Thanks again ,
Lou P.
Master Mercedes-Benz Tech
Master ASE Certified Tech

Ask Your Own Mercedes Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mercedes mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
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: 6,272
6,272 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

29,460 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

6,272 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

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

643 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
It's a 2001 MBZ e320. Originally had SRS warning light.
It's a 2001 MBZ e320. Originally had SRS warning light. Could not start the car at all. I bought the card, have not had time to orient myself with features. I tried everything so I pressed the PANIC b… read more
Danny
Danny
Owner, lead mechanic
High School or GED
3,963 satisfied customers
I have a 2008 R350 Making A thump or Clunk noise in right
Hi I have a 2008 R350 Making A thump or Clunk noise in right rear wheel when driving at any speed. also heard in front left wheel when turning … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
R350 replaced dead battery but can't turn ignition on with
R350 replaced dead battery but can't turn ignition on with key. Key fob unlocks and licks doors however. … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
6,272 satisfied customers
I left the key in the ignition overnight. they key wont even
I left the key in the ignition overnight. they key wont even turn. I tried to jump this morning and got beeping and a message to get my car to service - but dont shift gears... … read more
Matt
Matt
Engineer
Bachelor's Degree
643 satisfied customers
I have 2008 Mercedes-Benz C300. A year ago, I had to have
Hi I have 2008 Mercedes-Benz C300. A year ago, I had to have the EIS replaced by the dealership after the car would not start. Lights and radio came on but no turn over. It cost me over $1000 to get i… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My 2006 M.. S500 4 matic gave a message "Flash File
My 2006 M.B. S500 4 matic gave a message "Flash File System will be formatted. All user data lost. It could take up to 5 minutes. Please do not switch off!" That message persisted for days. I have ano… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
c300: I have a 2012 c300 and the radio speakers started
I have a 2012 c300 and the radio speakers started crackling and whining and then the left channel went out. I can't imagine its the head unit. Amp issue you think? It happened after going through the … read more
Expert
Expert
500 SEL: Hi Marty,Over the years of neglect, my '93 500 SEL
Hi Marty, Over the years of neglect, my '93 500 SEL has developed several problems. Yes, the odometer stopped working last year and the speedometer seems to hang up around 60 mph. The high beams don't… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
R350: The battery problem indicator came on in my 2007 mercedes
The battery problem indicator came on in my 2007 mercedes benz R350. We took it to a repair shop and they said that the alternator and auxillery battery needed to be changed. (We had the main battery … read more
Phenex2008
Phenex2008
43 satisfied customers
R350: I have a 2008 R350 and out of the blue it started to
I have a 2008 R350 and out of the blue it started to make violent noises what appeared throughout the electrical system. Turning the volume down and even after powering off it continued to make loud b… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes-Benz R350 4Matic I replaced the battery in my 06
I replaced the battery in my 06 r350 about five months ago, I did not drive the car for six weeks.The battery was completely dead. The supplier replaced it. This one went dead after three days of non … read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
1,364 satisfied customers
2007 Mercedes R350: have had a dead battery 3 times since september
I have a 2007 Mercedes R350 and have had a dead battery 3 times since September. Any advice?… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2006 R350: 15 minutes..minutes later..electrical..drivers door
I Have a 2006 R350. I went to an office building and when I came out 15 minutes later, the back windows were down and there was a smell as something had burned electrical. The windows would not come b… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2005 clk500: my garage for the last 3 days..Prior to that it ran fine.
I have a 2005 CLK 500 Cabriolet. It sat in my garage for the last 3 days and failed to start this morning. Prior to that it ran fine. The key would not turn, the remots trunk release on the door did n… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
S430: alarm going..keys will not open the door..door open
I have 2000, S430 - there is a sound/alarm going off. keys will not open the door or start the car. I was able to get door open with removeable emergency key. I got the hood open, but do not know how … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
C280: sedan..car wont start unless I jump the battery..trunk
I have a C280 ,1995 sedan . The car won't start unless I jump the battery with a portable battery charger / air pump dingus from pep boys , or whoever. Also , the front door on the driver's side door … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
1997 E420: The speaker in the left front door works, although it
I have a 1997 E420. The speaker in the left front door works, although it sometimes "crackles". All other speakers in the car do not work. I'm not sure when this began, however I believe it was less t… read more
MB Paul
MB Paul
Mercedes Technician
Vocational, Technical or Trade Scho
3,567 satisfied customers
2000 ml320: completely dead..aaa..jump..brand new from the dealer
Hello: I have a 2000 ML 320, recently it is killing the battery! I thought at first that the battery was old and needed replacement, I did and 3 weeks later, It died! completely dead! AAA came to help… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 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