Stranded R230 - will not turn over

[SteveJ69]

Hi,

My R230 Sl55 (2003) has been parked under a cover since Nov, with little use appart from short runs to keep things moving.

Last month I noticed it wouldn’t unlock, but would start, but with the usual electric consumers offline message. Anyway removed the battery, gave it a full charge, re-fitted and all good.

There has always been a little damp in the boot but I’ve removed everything and dried it. Also had a full valet ready to sell.

Anyway yesterday I decided to take the sl on a 100 mike journey to my girlfriends. All well and didn’t miss a Beat on the journey. Parked the car on her driveway over night. Returned to it this morning started it no problem. This evening the car will lock and unlock but will not start.

Warning on the dash says ESP defective (which I had previously when the supply batter was low), but it doesn’t even attempt to crank. The other thing is the radiator fan starts running at full speed. Fuel indicates and water doesn’t (engine is cold) and the red water temp warning is on (never noticed if this is normal on startup).

Tried a jump start with leads on starter battery, no dice. I’m not convinced it’s battery as all werwell charged and she started without issue today.

The car is also definately In park and I hve also cycled the transmission lever.

Any thoughts? I can RAC it home but would be good not to have to.

Cheers

 

[DREAMER NO2]

Sounds like a faulty sam unit . Check all your fuses before going further . And battery leads to the battery are nice and tight. And all the earth points can be suspect at this point .

 

[LostKiwi]

Check all earth's to engine, SAM and batteries.

 

[star]

Sounds like the engine control unit or no power to the engine control unit from the front sam.

 

[SteveJ69]

Ok so here's an update on the situation and it's very curious indeed. So i called out the RAC, who confirmed both batteries were ok. They did a diagnostics scan and read out a number of DTCs. Some are likely from when the Supply Battery was flat, but the list is as follows:

RAC DIAGNOSTIC SYSTEM
System Type: ENGINE SYSTEM TEST/VALUES
Name: 113.992 - ME 2.8.1 - 5.5L - 368 (500)
DTC: P208F,Cylinder shutoff valve (bank 2); electrical fault
DTC: P202E,Throttle control valve
System Type: GEARBOX
Name: GEARBOX - GEARBOX
DTC: P2313,Fault in CAN communication with control module ESM/selector lever position of control
module; implausible
DTC: P2318,CAN: communication fault with ESM (Electronic Selector Module)
System Type: BRAKES
Name: ELECTRONIC STABILITY PROGRAM - ELECTRONIC STABILITY PROGRAM
DTC: C14B7,System faults: Steering angle sensor is not initialized
DTC: C151B,CAN: Communication, engine - ESP
System Type: IMMOBILISER
Name: IMMOBILISER - IMMOBILISER
DTC: B1010,The supply voltage of the control unit is too low (undervoltage).
System Type: CENTRAL ELECTRONIC UNIT
Name: PNEUMATIC CONTROL UNIT - PNEUMATIC CONTROL UNIT
DTC: B1436,The safety time of the central locking has been exceeded
DTC: B1440,Boot lid switch
System Type: CENTRAL ELECTRONIC UNIT
Name: SIGNAL ACQUISITION AND CONTROL MODULE - REAR - SIGNAL ACQUISITION AND
CONTROL MODULE - REAR
DTC: B1074,No or incorrect CAN message from EIS control module

DTC: B1026,Fault in CAN communication with control unit AAC
DTC: B1010,The supply voltage of the control unit is too low (undervoltage).
DTC: B1222,Internal control module monitoring processor performance
DTC: B1381,Inclination sensor
DTC: B1088,CAN; communicaton fault with ICM
System Type: CENTRAL ELECTRONIC UNIT
Name: DRIVER-SIDE SIGNAL ACQUISITION MODULE - DRIVER-SIDE SIGNAL ACQUISITION
MODULE
DTC: B1341,No communication with alarm siren
DTC: B1088,CAN; communicaton fault with ICM
DTC: B1076,Fault in CAN communication with (Rear SAM)
DTC: B1074,No or incorrect CAN message from EIS control module
DTC: B1010,The supply voltage of the control unit is too low (undervoltage).
System Type: CENTRAL ELECTRONIC UNIT
Name: PASSENGER SIDE SIGNAL ACQUISITION MODULE - PASSENGER SIDE SIGNAL
ACQUISITION MODULE
DTC: B1416,Heating water circuit.

The engineer cleared all the DTCs and then had to manually clear the first 2 in the list with a reset and a cycle of the ignition and hey presto, she starts! Tested a couple more starts on the drive way all ok.

Having made the decision to leave for home early, i went off and had lunch and came back 2 hours later to hit the road. Unlock fine, load the boot, hit the ignition...........No Dice..........Dead as a Do Do.

I didn't have my iCarSoft with me, but did have a small Clarke OBD2 Reader with me. I had tried reading codes last night before calling the RAC and it interrogated the ECU fine but showed no DTCs. I tried the Clarke again this time and again no DTCs, but i ran a "clear" and cycled the ignition and hey presto, she starts again!

I managed a 2.5 hour 110 mile drive in the slow lane at around 60-70 mph with no issues, there was one little hickup about 60 miles in, but this could have been a lumpy up shift as it happened just after a kickdown overtake.

Arriving home the car seems to stop and restart without issues. I've connected my iCarSoft and Scanned all modules with no DTCs at all, so i dont know if the codes the RAC read out were down to the battery issue which i have now resolved.

All the symptoms point to a K40 issue, but it's odd that an ECU Reset seems to solve the problem.

I'm advertising the car for sale, so i'm keen to get this resolved for a future owner.

Cheers, sorry for the long email!

Steve

 

[DREAMER NO2]

Steve its complicated reading this .I dont know where to start . Hope you can get it sorted for your sale .

 

[LostKiwi]

There will be a code there that will keep reappearing which is not reported by the Clarke reader (not all readers can read all codes but many will clear codes they can't read anyway). Find the repeating code and you're on your way to finding the problem.

 

[DREAMER NO2]

lostkiwi I see in the list immobiliser could this be the first port of call .

 

[LostKiwi]

lostkiwi I see in the list immobiliser could this be the first port of call .

Given its an undervoltage alert not very likely.
Now all the undervoltage and CAN errors have been cured the cause will be anything that comes back. CAN communication can be related to undervoltage as well so its usually OK to ignore them unless they come back on their own.

 

[ajlsl600]

lots of issues related to incorrect .low voltage , will go away. i have just spent best part of two weeks dealing ,at first clutching at straws !! with mine never had a complete no start tho . i also had a good number of CAN comms issues . cleaned and checked all connectors ,earths i could find ok now. my initial cause was a rodent eating three wires and a faulty washer tank level sensor. however i suspect many others relate to previously when i was away from home for 12 weeks and the consummer batt died completely ,it was replaced by lovelly and i suspect thats an additional ,seperate issue to the rodent. sometimes i think its possible that one issue, in my case rodent, can lead you to other, actually unrelated issues ,in my case prob related to dead battery.{it was on ctek !} that at the time of first investigation seem related, what i learnt , with the benifit of hindsight ,i will run the diagnostic checks far more often .. good luck with yr problems , pretty sure it will turn out to be related to being parked up ,ie power