Technical Issue starting ?

[Azprada2478]

I have a 2015 500L and Was driving en route to a friend's house when all the sudden car sputtered and stalled at a traffic light , tried to start the car several times but would not start. Got the car out of the traffic into a parking lot and still barely turns over if ttag and can't seem to figure out what the issue is...any help would be great ?

 

[The Panda Nut]

We need a bit more information. What year is the car and which engine does it have, size, and fuel,type. Remember we know nothing other than what you tell us.

 

[Azprada2478]

2015 500l trekking 1.4l 14 multi turbo air gas engine

 

[Mike1alike]

"barely turns over"?! Check the battery voltage.
Crankshaft sensor is the first one we suspect in your situation and you should check if it's working. While cranking (if you can still crank), watch the RPM gauge. Does the needle stay down or is it rising? It should rise to 200~300 RPM.

 

[Azprada2478]

Barely turns over but also just randomly started clicking w/o turning over. When it was tiring over the needle just.ped up some but not exactly 200/300.

 

[Mike1alike]

Get a multimeter and read the battery voltage before trying to crank. Battery might be discharged.
If it's not, it's the starter motor. It might be 'discharged'

 

[Azprada2478]

"barely turns over"?! Check the battery voltage.
Crankshaft sensor is the first one we suspect in your situation and you should check if it's working. While cranking (if you can still crank), watch the RPM gauge. Does the needle stay down or is it rising? It should rise to 200~300 RPM.

Checked the voltage and read spot on but now when I turn it over it clicks and then loses power. Not sure because the battery is fully charged. Smh.... Dunno what else to do

 

[Azprada2478]

Get a multimeter and read the battery voltage before trying to crank. Battery might be discharged.
If it's not, it's the starter motor. It might be 'discharged'

That's what I was thinking the starter because I smelled some kind of electrical burning or something after I tried to start it over and over ....

 

[Mike1alike]

Check the (+) cable connected to the starter motor. Voltage drop test. Like in this video.


If that doesn't do it, you must take the starter motor down and see what's wrong with it. And fix it or replace it.

 

[Mike1alike]

Checked the voltage and read spot on but now when I turn it over it clicks and then loses power. Not sure because the battery is fully charged. Smh.... Dunno what else to do

What red spot?
You just say the battery is fully charged. But what's the voltage on it? Sounds like it might be completely discharged.

 

[Azprada2478]

What red spot?
You just say the battery is fully charged. But what's the voltage on it? Sounds like it might be completely discharged.

Yes it reads 12.5 but when it's connected it wont turn over and if it does try to turn over it's like barely if at all

 

[Azprada2478]

What red spot?
You just say the battery is fully charged. But what's the voltage on it? Sounds like it might be completely discharged.

Yes I was referring to the voltage reading what it should being spot on nothing red ...lol

 

[Azprada2478]

Check the (+) cable connected to the starter motor. Voltage drop test. Like in this video.


If that doesn't do it, you must take the starter motor down and see what's wrong with it. And fix it or replace it.

Ok great I will go and let you know what I find out

 

[Mike1alike]

Ok. The starter motor is at fault. Now see if is something wrong with it or something wrong with the cables and connectors.
First thing make sure the cables contacts are firmly connected to the battery terminals.
For (+) line do the test as in video I put in the link above.
For (-) line it's best to measure between starter motor casing and battery (-) terminal.
Measure negative circuit voltage drop
Take a multimeter, set it to DC volts, scale 20V (or 2 V) and check the voltage drop between your starter motor ground and the negative battery terminal while it's under load by placing the black lead of the voltmeter on the housing of the starter motor and the red lead of the voltmeter on the negative battery terminal.
You want that number to be as close to zero as possible. Anything above 0.2 volts, and it's time to clean or rework your ground.

 

[jackwhoo]

It is not possible to tell state of charge or condition of battery by just reading no load voltage.