Mercedes

Have Mercedes Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Mercedes

C320: 2002 c320 srs esp abs lights always come on when starting,

Customer Question
2002 c320 srs...
2002 c320 srs esp abs lights always come on when starting, now brake light and sos tileade are illuminated, rear bulbs are good, battery is 100 % alternator is 12.5 v+, there is not a brake light switch on this model. what do you think bas also comes on fuses are all good
Submitted: 2 years ago.Category: Mercedes
Show More
Show Less
Ask Your Own Mercedes Question
Answered in 3 hours by:
7/10/2015
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
Kevin
Kevin, Master tech
Category: Mercedes
Satisfied Customers: 2,342
Experience: Diagnostic technician
Verified
Hi I'm Kevin can you confirm charging voltage test with car running and see what voltage you have at battery?
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
13, vdc
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
Ok that's a bit low looking for 14.2 is perfect check this again with the lights ang rear heated screen turned on I suspect your alternator is failing
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
it will be a 1/2 hour till i am free of dialysis machine
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
Ok take your time come back to me when your ready if I'm not online il get back to you as soon as I can
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
14.06 v
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
Ok so 14.06 under load 13 normal
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
correct
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
It seems a little low to be honest with you I would be starting with an alternator at fault as any low voltage fault will cause system fault lights to illuminate . I would get system scanned for faults to see why the car is putting lights on as it will most likely contain low voltage faults
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
would you suggest a new alternator or just a voltage regulator, also i have been researching this for two years and think it might be the BAS SENSOR so i have one ordered.
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
Without codes from system it would be difficult to pinpoint any other fault the only thing I can say for sure is that the charging voltage is low I would replace whole alternator if you get me codes I can help further
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
DTC Code are Speed Control Actuator Assembly Cablr Slack Failure (c1179); Open CIRCUIT HEATING o2 COMPONENT G3/6 RT 02 SENSOR (P0036) : Steering Angle sensor DTC status fault lamp on (c1179) ; BAS release switch OFF A7/751 (180);; BAS diaphramtravel sensor .08 mm A7/761 (182)
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
I suspect you have multiple issues and that low charging is just another issue steering angle sensors are common on all mercedes of this age I've not come accross the other faults in the abs I also don't have any info on the bad codes you have given I can open question up if you like there may be someone else online that can help more with this
Ask Your Own Mercedes Question
Customer reply replied 2 years ago
I'm sure you are correct after the bas is replaced (and alternator) i will investigate a new front SAM. anyway thanks for trying, and you may post the question.
Mercedes Mechanic: Kevin, Master tech replied 2 years ago
No worries a bit restricted with info for this one I've open question up so someone else can try and help
Ask Your Own Mercedes Question
Ask Kevin Your Own Question
Kevin
Kevin
Kevin, Master tech
Category: Mercedes
Satisfied Customers: 2,342
2,342 Satisfied Customers
Experience: Diagnostic technician

Kevin 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
I have a 2006 mercedes s430. new alternator, new battery and
I have a 2006 mercedes s430. new alternator, new battery and fuses under passenger floor checked ok---still no charge … read more
Eurocar Inc
Eurocar Inc
Master Audi/VW Tech
Associate Degree
1,773 satisfied customers
The ABS & ETS lights are on. No speedometer & no MPG meter.
The ABS & ETS lights are on. No speedometer & no MPG meter. Wanted to check the DTC code and the light stays on and get no codes. where do I go from here? … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
ABS light is on it says see owers manual. Just ABS light and
It just started today. I dont plan on fixing myself. I thought I could do a reset on it. I just had the front brakes done about a month ago. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Just changed the alternator on my 2000 c280. Everything went
just changed the alternator on my 2000 c280. Everything went together ok. I started the car and the battery light went out as expected. However, the BAS/ESP and the ABS idiot light remain on. … read more
Marty
Marty
Mercedes Technician
Associate Degree
28,952 satisfied customers
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
Bachelor's Degree
3,708 satisfied customers
The blue wire in the back of the alternator has no power
the blue wire in the back of the alternator has no power when the key in switched on,after replacing the battery in 2003 benz s430 4matic so the alternator is not chargong … 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
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
1987 300SDL alternator (original) bearing was making very
1987 300SDL alternator (original) bearing was making very loud noises. I replaced it with a new one (not reman) and fully charged the battery before driving. 30 minutes into the drive, most dash light… 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
My ABS and ESP light are on... yes, auxiliary battery need
auxiliary battery need to be replaced? 2008 ML320 CDI … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
After oil change oil light and abs light on, just abs light,
After oil change oil light and abs light on JA: Is it just the ABS light? Or is the brake system warning light on, too? Customer: just abs light JA: What is the model/year of your Mercedes? Customer: … 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
My alternator is not charging the battery although the
My alternator is not charging the battery although the alternator is test that it is good. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Got water i think in alternator while cleaning battery light
got water i think in alternator while cleaning battery light on also gauges don't work and turn signals as well … read more
Shawn Few
Shawn Few
AS
68 satisfied customers
03 clk320 will turn over but not fire, Alternator, battery,
Alternator, battery, and crank sensor already replaced … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
It lit up a warning light that says: "Alternate battery Low"
It lit up a warning light that says: "Alternate battery Low" … read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 satisfied customers
Malfunction light on Battery/alternator visit work shop and
Malfunction light on Battery/alternator visit work shop and also Under Voltage Switch consumer off… read more
Lou P. master tech
Lou P. master tech
Mercedes Technician
Bachelor's Degree
3,708 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