Has this ever happened to anyone ?? 2012 e350 CDI sport

[Sr108]

So today I I was driving and just about to pull out of junction and the steering just locked up and I couldnt steer , on the dash a red battery symbol was there which I read means that the battery is not charging .. after this the car wouldn't change gears so I couldn't move it at all , I switched off ignition to start car again ( because it has done this before and only after starting again would it go in gear ) but car wouldn't start again after because battery is dead later someone helped me to start it and eventually I managed to get it in gear and move it out of the junction and on to side of the road.. now all electrics are totally dead but car is running , I decided to leave the car there for tonight and sort it out tomorrow and when i switched off the car and took the key out the car just carried on running I couldn't get it to stop.. after some time it stopped im guessing because the fuel had run out ( car was very low and was on my way to fill up )

Just wondering if anyone else experienced something like this , it's all just because the battery is dead and not charging ?

 

[sl500amgsport]

Damn sounds awful, is your car a hybrid as it may be the 48v battery at fault to effect so much?

Hopefully someone more technical will have a constructive answer for you.

Might be useful if you post your model and year...

Sent from my SM-G988B using Tapatalk

 

[Sr108]

Damn sounds awful, is your car a hybrid as it may be the 48v battery at fault to effect so much?

Hopefully someone more technical will have a constructive answer for you.

Might be useful if you post your model and year...

Sent from my SM-G988B using Tapatalk

No it's diesel , model info in the title , thanks

 

[mioba]

Very odd, esp that it wouldnt switch off after turning off ign.

Get the car some fuel.
once up and running it needs the codes scanned.
The battery light could be the alternator/rectifier - check rectifier firat.
Check under bonnet the condition of serpentine belt

The above would be my staring points. not sure if you are handy otherwise

 

[Mr Greedy]

https://mhhauto.com/Thread-Mercedes-W212-CDI-Ignition-off-engine-still-running-P068500

If not the link to the shut off relays, I'd guess some sort of electrical fault.
Water in a fuse box or SAM?
Water in the doors playing havoc with the electric window circuit and confusing the ECU?
A broken wire somewhere (any of the wires that pass through hinges would be my first place to look (with a code reader).

As suggested, above by Mioba, I'd start getting some fuel in, you could try a slave battery, and get the codes read.

 

[Sr108]

Very odd, esp that it wouldnt switch off after turning off ign.

Get the car some fuel.
once up and running it needs the codes scanned.
The battery light could be the alternator/rectifier - check rectifier firat.
Check under bonnet the condition of serpentine belt

The above would be my staring points. not sure if you are handy otherwise

I reckon it just needs a new battery and all will be ok but I forgot to mention I do have engine management light on , when scanned it said something about control module I think , can't remember exactly ..

 

[Sr108]

https://mhhauto.com/Thread-Mercedes-W212-CDI-Ignition-off-engine-still-running-P068500

If not the link to the shut off relays, I'd guess some sort of electrical fault.
Water in a fuse box or SAM?
Water in the doors playing havoc with the electric window circuit and confusing the ECU?
A broken wire somewhere (any of the wires that pass through hinges would be my first place to look (with a code reader).

As suggested, above by Mioba, I'd start getting some fuel in, you could try a slave battery, and get the codes read.

I reckon it just needs a new battery and all will be ok but I forgot to mention I do have engine management light on , when scanned it said something about control module I think , can't remember exactly ..

 

[Buck2003]

Hi I was driving about a month ago and went round a roundabout and my power steering stopped and I had to force it to turn. It started working but jerky/intermittent and the engine wanted to cut out.
I put it down to water ingress due to bad weather....but here we are a month later and I've had to buy a new battery. Coincidence...

 

[Mr Greedy]

I reckon it just needs a new battery and all will be ok but I forgot to mention I do have engine management light on , when scanned it said something about control module I think , can't remember exactly ..

Could well be. Worth a relatively cheap and very easy DIY swap.

 

[Sr108]

Hi I was driving about a month ago and went round a roundabout and my power steering stopped and I had to force it to turn. It started working but jerky/intermittent and the engine wanted to cut out.
I put it down to water ingress due to bad weather....but here we are a month later and I've had to buy a new battery. Coincidence...

Same car ? Which battery did you get ?

 

[Sr108]

So yetserday I was driving and just about to pull out of junction and the steering just locked up and I couldnt steer , on the dash a red battery symbol was there which I read means that the battery is not charging .. after this the car wouldn't change gears so I couldn't move it at all , I switched off ignition to start car again ( because it has done this before and only after starting again would it go in gear ) but car wouldn't start again after because battery is dead later someone helped me to start it and eventually I managed to get it in gear and move it out of the junction and on to side of the road.. now all electrics are totally dead but car is running , I decided to leave the car there for tonight and sort it out tomorrow and when i switched off the car and took the key out the car just carried on running I couldn't get it to stop.. after some time it stopped im guessing because the fuel had run out ( car was very low and was on my way to fill up )

Just wondering if anyone else experienced something like this , it's all just because the battery is dead and not charging ?

Today AA guy came out and said that it's the alternator because the battery is charging at 12.09 Volts where it should be charging between 13.02 - 15 volts , he then said the alternator belt is gone .. does this sound right ?

 

[EmilysDad]

the battery will definitely die if the alternator/fan/aux belt has failed .... not sure why it would prevent the engine from switching off with the key though ???

 

[Buck2003]

I bought the Varta silver 12v 800mah 80mh which is the same power as my cars original battery.
I've been reliably informed that Tanya's Batteries is a great place to buy from and reliable.
My cars not the exact same model but I think similar.
Mines an E220 CDI blue efficiency, sports edition, cabriolet. W212 year 2011/12

 

[Buck2003]

I don't think diesels need constant power to run do they? It prob ran till the fuel bowl drained.
As I mentioned my battery was very weak for a long time, but one night I went round a roundabout in terrible rain/puddles and my engine spluttered... obviously when the engine dies you lose power steering so it was kinda of jerky...I managed to keep the car moving in limp mode the suddenly it sprang back to life and was fine. (I feel in hindsight if I'd stopped straight away it may not of started again. I thought I'd either got water in the air intake or got an electric component wet.
If you don't have an alternator belt your battery can't charge at all??? It turns the alternator... luckily it's a cheap fix. Btw my alternator charges at 14.7 ISH.
Also if the belts gone the alternator isn't charging so he may of just been reading what was in the battery at that time.

Sorry just having guesses.

 

[Sr108]

I don't think diesels need constant power to run do they? It prob ran till the fuel bowl drained.
As I mentioned my battery was very weak for a long time, but one night I went round a roundabout in terrible rain/puddles and my engine spluttered... obviously when the engine dies you lose power steering so it was kinda of jerky...I managed to keep the car moving in limp mode the suddenly it sprang back to life and was fine. (I feel in hindsight if I'd stopped straight away it may not of started again. I thought I'd either got water in the air intake or got an electric component wet.
If you don't have an alternator belt your battery can't charge at all??? It turns the alternator... luckily it's a cheap fix. Btw my alternator charges at 14.7 ISH.
Also if the belts gone the alternator isn't charging so he may of just been reading what was in the battery at that time.

Sorry just having guesses.

Yes belt is gone so just need to get belt replaced and then maybe a new battery too

 

[Sr108]

the battery will definitely die if the alternator/fan/aux belt has failed .... not sure why it would prevent the engine from switching off with the key though ???

Yeah needs a new belt , and yeah running without the key was some weird ****

 

[mioba]

why two threads on the same

 

[Sr108]

why two threads on the same

Trying to figure out how to delete the other one

 

[Blobcat]

why two threads on the same

Trying to figure out how to delete the other one

Just 1 now

 

[EmilysDad]

I don't think diesels need constant power to run do they? .....

That was true many moons ago ..... I remember having to go under the bonnet of the diseasal milk float when I helped on a milk round 40-odd years ago to shut the fuel off to stop it ... but modern common rail fuel systems require lots of electrickery to run & stay running