BMW

BMW questions? Ask a BMW repair Expert for answers.

Ask an Expert,
Get an Answer ASAP!

2007 BMW x3. No crank, no start. Battery voltage currently…

Customer Question
2007 BMW x3. No crank...
2007 BMW x3. No crank, no start. Battery voltage currently only 11.5. P0012 code. Nothing else checked. Have multimeter and test light. Will need hand holding.
Submitted: 8 months ago.Category: BMW
Show More
Show Less
Ask Your Own BMW Question
Answered in 21 minutes by:
9/8/2017
BMW Mechanic: Matt, Engineer replied 8 months ago
Matt
Matt, Engineer
Category: BMW
Satisfied Customers: 23,078
Experience: Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
Verified

hello

If the car's not cranking then first check it can turned over by hand by using a socket on the crank pulley nut, so double checking for any mechanical issues

If OK then check that the main battery cables are on tight and the terminals are clean and bright. Do the same for the engine / gearbox earth strap.

Then follow the main positive lead back to the engine and down to the starter motor, and check the connection at this end as well.

There should also be a small wire to the motor which should have 12V when you're turning the ignition switch / pushing the start button to crank. If the 12V isn't there, check back along this wire for damage to the insulation or corroded connections

This 12V feed comes directly from the ignition switch / starter button so this may be faulty and need replacing

Check the resistance of the main positive lead that runs down to the motor as anything more than a few ohms and it should be replaced

Don't forget to try a jump start from another car / battery as its possible the battery is poor, if you have a voltmeter a healthy battery should read 12.7+V

also try substituting the battery for another as I've known a very flat battery to drag down the system voltage too far even with jump cables

one other thing to consider is that the immobiliser is faulty and preventing the starter from being enabled - however if the dash / ignition lights are on then this usually means that its off

If this is all OK then its possible the car needs a new starter motor

Ask Your Own BMW Question
Customer reply replied 8 months ago
2007 BMW X3 6cyl. No crank, no start. Turn key to on, and everything lights , and you hear electrical sounds if things turning on, etc. Try cranking, and everything stops making noises, and all you have are dash lights. Has a p0012 code. Battery voltage is 11.5.
BMW Mechanic: Kenny, BMW Technician replied 8 months ago
Kenny
Kenny, BMW Technician
Category: BMW
Satisfied Customers: 1,126
Experience: BMW Master Certifed level 1 Technican
Verified

I would check the ground cable from the engine to the body it is a common failure point because it is just exposed bare copper wire. it is under the car on the passenger side of the engine near the back you can see it from under the vehicle.

Ask Your Own BMW Question
Was this answer helpful?
Ask Kenny Your Own Question
Kenny
Kenny
Kenny, BMW Technician
Category: BMW
Satisfied Customers: 1,126
1,126 Satisfied Customers
Experience: BMW Master Certifed level 1 Technican

Kenny 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:

Roger

Roger

BMW Master Tech

3,050 satisfied customers

10 yrs. experience as BMW Master Technician, shop foreman and dealer.

Marty

Marty

ASE Certified Technician

555 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

bimmaster

bimmaster

BMW Technician

1,838 satisfied customers

3 years dealer experience, master bmw tech

Sam

Sam

BMW Master technician

1,043 satisfied customers

BMW S.T.E.P. graduate, 10 years BMW dealership experience

Thebmwbum

Thebmwbum

BMW Foreman

714 satisfied customers

31 years BMW Experience

mike

mike

BMW Technician

694 satisfied customers

bmw master tech ase certified

Matt

Matt

Engineer

23,078 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

< Previous | Next >

Related BMW Questions
Why is my 2007 x3 overheating?
why is my 2007 x3 overheating?… read more
Sam
Sam
BMW Master technician
Vocational, Technical or Trade Scho
1,043 satisfied customers
2007 BMW X3: here that wont start
I have a customer's 2007 BMW X3 here that won't start. I have no DME communication but a new DME did not solve the problem, any thoughts?… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
BMW X3 3.0i: i have a 2006 bmw x3 with some trouble codes and
i have a 2006 bmw x3 with some trouble codes and im trying to get the definition 1.)5F42: EGS-Error: Gearbox in Emergency Mode Active 2.)5E96: Lateral Acceleration Sensor 3.)5DCE: Control Unit (voltag… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
My 2006 x3 won't start and has service,eml,and 4x4 light on.
My 2006 x3 won't start and has service,eml,and 4x4 light on. When I put the battery cables together for 10min to rest the computer it starts and runs fine until the second or third time it's turned of… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
After I pair my phone with my BMW X3 it works for a little
After I pair my phone with my BMW X3 it works for a little while, but it appears to update the contacts about 4 to 6 times and then the BMW unpairs the phone. My phone works well with my wife's VW Gol… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Put conventional oil in my x3. will that cause problems.
put conventional oil in my x3. will that cause problems. just one quart. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
I have a 2011 bmw x3 that seems to be having a shifting
I have a 2011 bmw x3 that seems to be having a shifting problem … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2011 X3 35idrive- while driving today, the thermostat
2011 X3 35idrive- while driving today, the thermostat console lights flickered and then, the heat blower went automatically from low to high- what would cause this? … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
High idle. 118000 2.8. Bmw x3 2006. Looking for answer
high idle JA: How many miles are on the car? What size is the engine? Customer: 118000 2.8 JA: What is the make/model/year of your car? Customer: bmw x3 2006 JA: Are you fixing your X3 yourself? What … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Mydriversidedontworkbmw2009 x3. 2009. Change the control
Mydriversidedontworkbmw2009 x3 JA: What year is your X3? Customer: 2009 JA: Are you fixing your X3 yourself? What have you tried so far? Customer: Yes change the control unit JA: Anything else you wan… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
How to reset the "Check Engine Soon" light in a 2006 BMW x3.
How to reset the "Check Engine Soon" light in a 2006 BMW x3. Tried removing the battery cables, touching them together for a 15-20 second period as per a "THis works on ALL BMWs" video on YouTube. Nad… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2006 BMW X3 - sitting at stop light, Check Engine Light
2006 BMW X3 - sitting at stop light, Check Engine Light flips on and engine immediately starts running rough. Had been noticing a slight hang when decelerating - engine would hang at higher rpms or ev… read more
Marty
Marty
ASE Certified Technician
Associate Degree
555 satisfied customers
How do I reset diagnostic codes on BMW X3
How do I reset diagnostic codes on BMW X3… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
X3: I have a 2005 BMW X3 and get a severe clunking from the
I have a 2005 BMW X3 and get a severe clunking from the rear (diff I believe) when doing slow speed turns - like in a parking lot or pullin out from a side road - anywhere from 1/2 - to full lock on t… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
I got code p12ba on my 2012 X3 Xdrive28 i has a 3.0 no turbo
i got code p12ba on my 2012 X3 Xdrive28 i has a 3.0 no turbo what does the code mean… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
BMW X3: carbon..The mechanic says the problem is on my EGR valve
I have got carbon deposits in my BMW X3 2.0d. The mechanic says the problem is on my EGR valve and on my driving habits (i drive at low engine revolutyions). He is proposing to expend 3000 $ in a repa… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
2005 BMW X3: oil pan gasket..engines..rebuilt..is leaking and looking
2005 BMW X3: Can someone provide instructions for changing the oil pan gasket? I am a weekend mechanic and have done extensive car repairs (actually puled engines and rebuilt in my younger days). My w… read more
Roger
Roger
BMW Master Tech
Bmw STEP Training
3,050 satisfied customers
2006 BMW X3: battery was dead, charged the battery it started
My 2006 BMW X3 has been giving me some problems for sometime now. The vehicle did not want to start figured the battery was dead, charged the battery it started perfectly. Between a 2 month period the… read more
Roger
Roger
BMW Master Tech
Bmw STEP Training
3,050 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