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[Doctor Gollum]

On a positive note, a new Bosch pump is only about £65, even though the tank needs dropping

[Migv6 le Frog Fan]

My Mercedes is currently also cranking but wont start. Nothing to do with electronics as it doesnt have any, but I have a gut feeling it may be a serious issue. Could be looking for another one next week.

[Doctor Gollum]

Fairly short list of potentials on one of those

[STEMO]

My Mercedes is currently also cranking but wont start. Nothing to do with electronics as it doesnt have any, but I have a gut feeling it may be a serious issue. Could be looking for another one next week.

Don't forget to drain the fuel tank before it goes, there might be as much as £1's worth in there.

[Migv6 le Frog Fan]

Its got a couple of gallons of diesel in there at the moment.  Typical.
Im actually confident I would get at least what I paid for it even if the engine is fooked. It will cost  lot more than that to buy wnother half decent one though.

[Marks DTM Calib]

Every mechanic I know blames CAN when they don't understand CAN 

CAN doesn't just fail, its always a module, the major question is which one, if a unit communicates by some means, even if its only fault codes then CAN is fine.

In general, the BCM/Gateway (for DoIP) is the CAN master on most vehicles built in the last 15 years (although GM did use the display as a CAN bridge on some vehicles) or so, always worth a check.

[Marks DTM Calib]

Its got a couple of gallons of diesel in there at the moment.  Typical.
Im actually confident I would get at least what I paid for it even if the engine is fooked. It will cost  lot more than that to buy wnother half decent one though.

Its not as simple as the fuel shutoff solenoid on the pump?

[Doctor Gollum]

Every mechanic I know blames CAN when they don't understand CAN 

CAN doesn't just fail, its always a module, the major question is which one, if a unit communicates by some means, even if its only fault codes then CAN is fine.

In general, the BCM/Gateway (for DoIP) is the CAN master on most vehicles built in the last 15 years (although GM did use the display as a CAN bridge on some vehicles) or so, always worth a check.

The climate control has a single fault relating to CAN communication with the engine module... 

[Marks DTM Calib]

Every mechanic I know blames CAN when they don't understand CAN 

CAN doesn't just fail, its always a module, the major question is which one, if a unit communicates by some means, even if its only fault codes then CAN is fine.

In general, the BCM/Gateway (for DoIP) is the CAN master on most vehicles built in the last 15 years (although GM did use the display as a CAN bridge on some vehicles) or so, always worth a check.

The climate control has a single fault relating to CAN communication with the engine module... 

It happens quite regularly, if a module is a bit slow to boot up a CAN frame gets missed and it flags a CAN fault issue. These are often masked at end of line and never cause a significant issue.

So what codes are actually present and wont clear (with engine running);

[STEMO]

Every mechanic I know blames CAN when they don't understand CAN 

CAN doesn't just fail, its always a module, the major question is which one, if a unit communicates by some means, even if its only fault codes then CAN is fine.

In general, the BCM/Gateway (for DoIP) is the CAN master on most vehicles built in the last 15 years (although GM did use the display as a CAN bridge on some vehicles) or so, always worth a check.

The climate control has a single fault relating to CAN communication with the engine module... 

It happens quite regularly, if a module is a bit slow to boot up a CAN frame gets missed and it flags a CAN fault issue. These are often masked at end of line and never cause a significant issue.

So what codes are actually present and wont clear (with engine running);

Fault code 000001..........this car is a Mercedes Benz 

[Doctor Gollum]

 

FZZ (immobiliser control module):
B1000
B1100
B1101
B1701

MSM (Throttle body):
Status:ERROR> Read error memory.
No codes displayed.

AC:
B1040
B1272

Think that's all that returns. Will double check later/tomorrow.

[Marks DTM Calib]

Has the battery and connections all been ok?

Mercs throw real wobbles when you get battery issues and you have a spread of codes

[dave the builder]

also alternator over voltage or under voltage or a component/fault causing a parasitic draw can upset modules
so worth checking battery and alternator voltages 

[Doctor Gollum]

Has the battery and connections all been ok?

Mercs throw real wobbles when you get battery issues and you have a spread of codes

Battery is relatively new, 6 months perhaps... will run KWs tests

[Andy B]

Every mechanic I know blames CAN when they don't understand CAN 

CAN doesn't just fail, its always a module, the major question is which one, if a unit communicates by some means, even if its only fault codes then CAN is fine.

In general, the BCM/Gateway (for DoIP) is the CAN master on most vehicles built in the last 15 years (although GM did use the display as a CAN bridge on some vehicles) or so, always worth a check.

I think this might the problem with my Smart 451 .... 2 garages have had 'communication problems'  I wonder if MB themselves might be worth a go.