Stuck on the road twice, engine won't start

bm2amb

Member
Joined
May 23, 2023
Messages
13
Reaction score
0
Your Mercedes
W204 C220CDI
My W204 C220 CDI (2008) Stuck on the road twice a day, lost power while driving.

from Dashcam and Camera


DTC log is in the Video Description.

anyone got idea? very panicking.
 
Last edited:

M80

Senior Member
Joined
Jan 21, 2006
Messages
6,099
Reaction score
2,878
Location
Derbyshire
Your Mercedes
2014 639 Viano- 651, 5sp Auto. 2009 S211- 646, 5sp Auto.
Engine cuts out.
Later restarts when engine cooler.
That's often down to the Crank Position Sensor.

Not expensive.
 
OP
B

bm2amb

Member
Joined
May 23, 2023
Messages
13
Reaction score
0
Your Mercedes
W204 C220CDI
  • Thread Starter
  • Thread starter
  • #3
Engine cuts out.
Later restarts when engine cooler.
That's often down to the Crank Position Sensor.

Not expensive.
Thanks for the reply. but how come the Coolant error is popping up and heaps of DTC error but no Crank Position Sensor.
 

M80

Senior Member
Joined
Jan 21, 2006
Messages
6,099
Reaction score
2,878
Location
Derbyshire
Your Mercedes
2014 639 Viano- 651, 5sp Auto. 2009 S211- 646, 5sp Auto.
What's the engine temperature showing when it cuts out?
Is the coolant level correct?

Getting the fault codes read is the ideal,
but that might wait till some one can fit you in,
MB typically charge £180 for that.

Last time i bought a CPS, many years ago admittedly, it cost me £36. And some contortioning to swap it out.

Pretty sure the screw driver points the way for the 651
 

Attachments

  • b.JPG
    b.JPG
    160.5 KB · Views: 11
  • c.JPG
    c.JPG
    189.7 KB · Views: 11
Last edited:

supernoodle

Senior Member
Joined
Sep 7, 2021
Messages
421
Reaction score
353
Your Mercedes
E220 2005 2.1D
The OP has posted the 19 DTCs in the another thread as well as the Youtube description. Something more fundamental that crank sensor I'd say. As they are all electrical faults and lots of open circuits, you must be losing a 12v power. Is there something common to all those circuits?
The coolant warning (couldn't see it on the vid) I guess is just because the heated thermostat has lost it's power, but so have many others. They just don't have a dash message associated with them.
 

M80

Senior Member
Joined
Jan 21, 2006
Messages
6,099
Reaction score
2,878
Location
Derbyshire
Your Mercedes
2014 639 Viano- 651, 5sp Auto. 2009 S211- 646, 5sp Auto.
I assumed that engine shuts down, and as the alternator winds down it causes gremlin errors.
 
OP
B

bm2amb

Member
Joined
May 23, 2023
Messages
13
Reaction score
0
Your Mercedes
W204 C220CDI
  • Thread Starter
  • Thread starter
  • #7
The OP has posted the 19 DTCs in the another thread as well as the Youtube description. Something more fundamental that crank sensor I'd say. As they are all electrical faults and lots of open circuits, you must be losing a 12v power. Is there something common to all those circuits?
The coolant warning (couldn't see it on the vid) I guess is just because the heated thermostat has lost it's power, but so have many others. They just don't have a dash message associated with them.
Hi, Thanks for the reply. the coolant warning is on 31s (video), we have changed few relays before, it doesn't seems to help.

Do you think this could be ECU issues ?
 
OP
B

bm2amb

Member
Joined
May 23, 2023
Messages
13
Reaction score
0
Your Mercedes
W204 C220CDI
  • Thread Starter
  • Thread starter
  • #8
What's the engine temperature showing when it cuts out?
Is the coolant level correct?

Getting the fault codes read is the ideal,
but that might wait till some one can fit you in,
MB typically charge £180 for that.

Last time i bought a CPS, many years ago admittedly, it cost me £36. And some contortioning to swap it out.

Pretty sure the screw driver points the way for the 651
Engine temp was fine, reader told me was about 88c

all DTC fault is in the video description:
 

00slk

Senior Member
Joined
Dec 1, 2012
Messages
10,317
Reaction score
10,639
Location
Cambridgeshire UK
Your Mercedes
2002 SL55 AMG, 2005 E320 CDi, 2014 SLK250 CDi, 2003 SLK200
It's like the fuel pump is playing up.
 

supernoodle

Senior Member
Joined
Sep 7, 2021
Messages
421
Reaction score
353
Your Mercedes
E220 2005 2.1D
Do you think this could be ECU issues ?
No.

That many circuits in the ECU will not suddenly fail. The ECU will be the low side driver for those circuits. That means it switches the ground. The battery voltage supply for those circuits will come from another source. Given that'll probably be a single source, that is what I'd be searching for.

I see you're using an ELM based scan tool. That will only be interrogating the engine and transmission. A better tool that talks to all the other modules may yield some useful info.
 
OP
B

bm2amb

Member
Joined
May 23, 2023
Messages
13
Reaction score
0
Your Mercedes
W204 C220CDI
  • Thread Starter
  • Thread starter
  • #11
No.

That many circuits in the ECU will not suddenly fail. The ECU will be the low side driver for those circuits. That means it switches the ground. The battery voltage supply for those circuits will come from another source. Given that'll probably be a single source, that is what I'd be searching for.

I see you're using an ELM based scan tool. That will only be interrogating the engine and transmission. A better tool that talks to all the other modules may yield some useful info.
Thank you supernoodle, i guess will have to take to workshop to have STAR scan.

because they scanned before, could not isolate the issue, especially is intermittent. and strangely, it works again after 30mins.
 


Mercedes-Benz Servicing, repairs, engine and diagnostics
Wayne Gates - Mercedes-Benz, Unit F3, Phoenix Industrial Estate, Rosslyn Crescent, Harrow, Middlesex, HA1 2SP
Tel: 020 8863 9233
Established for 20 years all vehicles washed and vacuumed.
Top Bottom