Thread: TDV6 2.7. Engine not start after fording

Can you recall the faults as knowing them might help identify what got wet.

Quite a few....would of saved them but took my card out the other day for some reprogramming.

Just got flat bedded home. Raining here and battery low. Will charge up and see what codes are recorded. Did start once but sounded very sickly and noisy!!

Current Fault Codes.

FAULT 1 OF 21
ECU: Instrument Pack
CODE:U0102
Lost communication with transfer case control module
(INTERMITTENT)

FAULT 2 OF 21
ECU: Instrument Pack
CODE:U0132
Lost communication with ride level ctrl module / Lost communication with suspension ctrl module A
(PERMANENT)

FAULT 3 OF 21
ECU: Instrument Pack
CODE:U0138
Lost communication with all terrain control module
(INTERMITTENT)

FAULT 4 OF 21
ECU: Instrument Pack
CODE:U0184
Lost communication with audio unit
(PERMANENT)

FAULT 5 OF 21
ECU: Instrument Pack
CODE:B1A87
Battery disconnection/electronic control unit reset
(INTERMITTENT)

FAULT 6 OF 21
ECU: Engine Management
CODE:P0405
Exhaust gas recirculation sensor A - circuit low
(HISTORIC)

FAULT 7 OF 21
ECU: Engine Management
CODE:P1621
Immobilizer code words do not match
(PENDING)

FAULT 8 OF 21
ECU: Engine Management
CODE:P0622
Generator field terminal circuit
(INTERMITTENT)

FAULT 9 OF 21
ECU: Transfer Case
CODE:P0562
System voltage low
(INTERMITTENT)

FAULT 10 OF 21
ECU: Automatic Gearbox
CODE:U0155
Lost communication with instrument cluster control module

FAULT 11 OF 21
ECU: Parking Brake
CODE:U0155
Lost communication with instrument cluster control module
(INTERMITTENT)

FAULT 12 OF 21
ECU: Parking Brake
CODE:U0122
Lost communication with vehicle dynamics control module
(INTERMITTENT)

FAULT 13 OF 21
ECU: Parking Brake
CODE:C1A00
Control module
(PERMANENT)

FAULT 14 OF 21
ECU: Ride Level
CODE:U0416
Invalid data received from vehicle dynamics control module
(PENDING)

FAULT 15 OF 21
ECU: Steering Angle Sensor
CODE:U0300
Internal control module software incompatibility
(INTERMITTENT)

FAULT 16 OF 21
ECU: Airbags/SRS
CODE:B1A00
Control module
(PERMANENT)

FAULT 17 OF 21
ECU: Body Control
CODE:U2001
Reduced system function
(PERMANENT)

FAULT 18 OF 21
ECU: HVAC system
CODE:B1B74
Front foot-defrost mode stepper actuator
(INTERMITTENT)

FAULT 19 OF 21
ECU: HVAC system
CODE:B1B75
Front foot-face mode stepper actuator
(INTERMITTENT)

FAULT 20 OF 21
ECU: HVAC system
CODE:B1B76
Front left air blend stepper actuator
(INTERMITTENT)

FAULT 21 OF 21
ECU: HVAC system
CODE:B1B77
Front right air blend stepper actuator
(INTERMITTENT)

How high did the water get in the car? I'm not sure where they are all positioned but maybe an ECU got flooded. Good luck with it.

The water was high externally. But only trickled in on the passengers side. Until tow out. Water never more than a very low small puddle on the floor.

Engine area seemed dry!

Man, every time I go out to look it pours down.
Wiring and Ecu around battery appear dry. Lifted fuse box and maybe signs of water there...hard to see and started to pour again.

My obvious thought there is prolly some blown fuses (on the passenger side behind the glovebox), but the below fault will bring up a whole list of what seems unrelated faults as you have listed.

This is a common fault on the D3/early RRS.
"Lost communication with transfer case control module"
When the Transfer Case Control Module gets wet, (pressure cleaning engine bay, water crossings, body seals above failing) eventually it shorts a circuit on the pcb (the computer board), its behind the battery, behind a plastic cover.

When I replace them (round $600 from memory) I open the aluminum housing and waterproof the board with circuit board lacquer, then seal the alum case joints with sealant, finally use rubber grease on the seal for the plastic cover. Spray the whole lot with waterproofing.

The transfer case control module needs to be initialized/calibrated before it will function again. but the vehicle can be driven as a manual, as in use in sports mode and change gears, it will up-shift as you shift, but do be careful as it will also down shift as you shift, meaning it will go down into gears at speeds it prolly shouldnt.

Thats where I would start...

Regards
Daz