Back again, got up early, did SWMBO's job list and got back to the S500.
First thing, looking at that Data Card, looks to me like delivery date is 6th June 2001, am I correct thinking it's a 2001 model, a UK VIN Search suggests it was first registered 2002, does that sound about right ??
I will need this info to get spares right now, until I get registration document
Got hold of a recovery truck, and car was at home workshop by 4pm.
Plugged it up on the Star and got the same codes as yesterday.
Bit more detail..................
I looked at ESM, (Electronic Selector Module), in more detail.
Found "Drive Authorisation Has Been Issued By Control Module ESM, The Selector Can Be Moved Out Of 'P' ".
Looking at Live Data, the Kickdown Switch Operation is not detected even with the pedal to the metal !!
Also of note the + Gear change push button is working, but the - is not. PRND is detected OK as is W/S switch and Brake Lamp Switch. Shifter Lock Solenoid is working fine.
Next up looked at Engine Control Module, but SDS will not communicate with ECU big box in middle of screen comes up saying "Communication Error, Communication With Control Module Faulty", then went on to get "Possible Causes:-
1) You have selected wrong model designation, (Definitely didn't) !!
2) Connection of diagnostic cables, (they work fine on all the other Mercs I've done this week, and plugged it up to my V Class just now and communicating fine with all modules) !!
3) Check K wire at control module................Could be ?? How do I do this, what wire is it and what am I looking for ??
4) Control unit faulty, might be, I am convinced this is the wrong ECU, as it's labelled by a breakers as a CL430 V8 ECU.
But as I said yesterday night, I'm told it was sent to ECU Doctor in London, also it has their sticker / seal on it...........Could they have done stuff to get it to work on this car, like swap the Immo chip from original ECU ??
The seller is still adamant it was driven home after this ECU was fitted !!
What is this and is it fitted to my car ??
Message on SDS:- "Error during initialising, no link could be established between the diagnostic gateway and the control unit"
1) The voltage supply of the control module is not ok.
2) The control module is not part of the standard configuration, and, for this reason, could not be fitted"
What the heck does number 2 mean ??
Number 1) seems to be a common theme with other faults on this car, see my present conclusions at the end.
TPM (Tyre Pressure Monitoring)
I'm not sure if this is fitted, and doubt the car has the sensors in the valves, just by looking at them.
SDS is telling me to check the power supply at the TPM !!
ESP (Electronic Stability Program)
C1022 - 025 Can Com with Engine System faulty, same as yesterday.
C1027 - 001 Can Com with Engine System faulty, same as yesterday.
EZS Electronic Ignition Switch ELCODE (DAS 3)
1) "No communication link"
2) Possible voltage supply problem"
ICM (Instrument Cluster Module)
SCM (Steering Column Module)
No Communication but according to data card this is not fitted, and I see no sensors on the bumpers
When I moved the car earlier, the steering lock was definitely not on, as I steered it lock to lock to get it out of the tight space it was in, and winched it onto the recovery wagon.
Later I locked and alarmed the car obviously with ignition off and with the key out, but the steering lock is still not on...............
Is this because of the steering angle sensor initialisation code as per yesterday, or does it mean the lock is not working, all the other Mercs I've done with EIS you can here the lock coming on off when you put the key in and out, but this car I hear nothing.
So, to conclude I think either this car has the wrong ECU and therefore the communication errors are because of this, or there is a voltage / earth missing which controls all of these things that don't work................
Remember from the last 2 days................
Nothing controlled by the relays in RH Fuse Box SAM under bonnet works, but if I bridge the relays the Horn, Air Compressor, Starter etc then work surely the horn does not need the Engine ECU to communicate on Can Bus before it will work ??
I have had communication errors on other non Merc cars which have had a reference voltage or small earth missing.
Remember also that my Auto Gearbox ECU says it has a speed sensor voltage problem, which was the original fault on this car before the saga
................ Again, this suggests to me that there is a feed or an earth dropped out somewhere
SDS also said at some point tonight that I should check circuit 15 relief relay, on one of the tests I was doing, might have been to do with COMAND, as I have plugged the CD back in, but still can't get the radio to work yet.
What is circuit 15, and where is this relay, does anyone know ??
Now please don't get me wrong, I don't mind sourcing and buying a matching ECU, Shifter(especially bearing in mind the Tiptronic - switch error), EIS and Keys if this is going to work definitely, but if I buy it and car is still the same, then I'll be back at Square 1
So my gut feeling is to get more time tracing feeds etc especially around RH Fuse Box SAM area, as clearly somebody has been in there before, and when I'm satisfied that there are all the right Voltages etc there, if it still wont crank / start, then I'll buy the ECU set.
Any thoughts on this ??
Can anyone tell me where the front cigar lighter fuse is.............This is bugging me, because I've had this on Vauxhalls, auto gearbox draws a ref. voltage from that circuit, and goes into limp mode..............
My front Cig lighter doesn't work, and according to my Auto data the pre 2002 cars don't have a dashboard fuse box, I still haven't found one, although I haven't looked that thoroughly.
Any answers to any of the above would be gratefully received, many thanks in anticipation,