Hey sleepwalker,

I still need your help and comments on my 1995 w202. The dealer has made some changes to the settings/ codings in the ECU and it still did not solve problem.

It happened again right after I was about to collect my car from the workshop.

Any ideas?

 

it has nothing to do with the coding, programming, and settings.

it is still a component/signal problem which can be detected when the problem is present, according to the fault code, and actual values.

it happens after they change you engine control unit, so they must have installed a defective parts.

it is still under parts warranty, and they must replace it for the benifet of the doubt.

 

Ok, have you heard any recent news lately any recall of manufactured MB computerised parts this year?

 

only on electricals:

163, 210, 129, 220, 203, 215, and 208.4

 

just curious - what was for 129? Thanks.

 

only for electrical group. service measure includes many groups and depending on the production time.

[IMG]local://upfiles/1/3D2735D5F1404B0FBECEFD06C80C76FE.jpg[/IMG]

 

Hey sleepwalker,

Referring to the highlighted circle result, does this message always occur whenever there is a fault in the IFZ control module signal transmission or some other areas in the CAN?

[IMG]local://upfiles/3076/FF232EDCA1344888AC3589AEF5FB7A15.jpg[/IMG]

 

no. but the other one...yes.

on your car, only HHT function can be use for diagnosis, and i find it strange that the HFM cotrol unit detects the fault from itself and not from other CAN consumer/user.

internal fault???
HFM???

weak semi-conductors such as resistor, capacitor, condenser, diodes, and transistor cannot be avoided sometimes. but if it does, it must be faulty all the time.

the big question now is... under what certain circumstances that the problem occur?

temperature?
operation?
parking angle?
the way the car was stopped, locked, door closed?
barometric pressure?

it is very difficult. something must have affected something.

simulating such influencial parameter is very hard because we don't even know what it was. it can be anything.

the fate belongs only to the hands of the technician now who got access through all of those.

 

Sleepwalker,

Does a failing OVP relay affects the transfer signal from the IFZ control module to the HFM during ignition/ starting?

Thanks!

 

am not sure if your car uses OVP or base module because it is a newer model.

i think no.