2009 DB9 Volante - electrical issues?
Discussion
Hello!
I came to acquire a 2009 DB9 Volante automatic (LHD) that has had an interesting time. The car was owned by a gentleman with some medical issues that led to questionable decision making. Apparently, he drove the car over a parking stop, then parked it for 4(ish) months. That's where I stepped in.
I am almost finished repairing/replacing the obvious problems, including but not limited to the radiator/cooling system, transmission cooler and front sheet metal/fiberglass.
When I got the car, the battery had 0.75 volts. I have never seen it run, but the damage was consistent with a car being driven over a low obstruction.
Electrically, I can't explain its behavior. It will crank, but not start. When I hit the lock button, the locks cycle through locked then open. The roof doesn't respond to the switch. The radio doesn't work. The cluster only has a check engine light and the PATS red circle lit. No other lights illuminate. When I use the single ECU I got, the interior courtesy lights come on. Pushing the map light button does nothing. The trunk won't latch. The passenger window will only respond to the passenger side switch. The car had ~50 codes stored, most relating to the dead battery, I suspect. Clearing them and trying to restart yielded:
P008A Low Fuel Pressure
P0500 Vehicle Speed Sensor A Circuit Fault
P1000 System Check Not Completed Since Last Memory Clear
P115B Check Fuel System
U0001 High-Speed CAN Communication Bus Fault
U0101 Lost Communication with Transmission Control Module (TCM)
U0102 Lost Communication with ABS Control Module
U0146 Lost Communication with Gateway A
The parking sensor seems to work. It beeps at the car parked behind it. The ECU (key) receptacle has both red and white lights. Nothing else in the center stack seems to respond.
The car has a couple of gallons of gas.
Is there a unified explanation for the odd electrical behavior? Before I start chasing 20 different pathways/causes, is there one direction I should examine first? I'm hoping there is a pyrotechnic fuse I haven't been able to identify that will explain all of this.
Thank you.
I came to acquire a 2009 DB9 Volante automatic (LHD) that has had an interesting time. The car was owned by a gentleman with some medical issues that led to questionable decision making. Apparently, he drove the car over a parking stop, then parked it for 4(ish) months. That's where I stepped in.
I am almost finished repairing/replacing the obvious problems, including but not limited to the radiator/cooling system, transmission cooler and front sheet metal/fiberglass.
When I got the car, the battery had 0.75 volts. I have never seen it run, but the damage was consistent with a car being driven over a low obstruction.
Electrically, I can't explain its behavior. It will crank, but not start. When I hit the lock button, the locks cycle through locked then open. The roof doesn't respond to the switch. The radio doesn't work. The cluster only has a check engine light and the PATS red circle lit. No other lights illuminate. When I use the single ECU I got, the interior courtesy lights come on. Pushing the map light button does nothing. The trunk won't latch. The passenger window will only respond to the passenger side switch. The car had ~50 codes stored, most relating to the dead battery, I suspect. Clearing them and trying to restart yielded:
P008A Low Fuel Pressure
P0500 Vehicle Speed Sensor A Circuit Fault
P1000 System Check Not Completed Since Last Memory Clear
P115B Check Fuel System
U0001 High-Speed CAN Communication Bus Fault
U0101 Lost Communication with Transmission Control Module (TCM)
U0102 Lost Communication with ABS Control Module
U0146 Lost Communication with Gateway A
The parking sensor seems to work. It beeps at the car parked behind it. The ECU (key) receptacle has both red and white lights. Nothing else in the center stack seems to respond.
The car has a couple of gallons of gas.
Is there a unified explanation for the odd electrical behavior? Before I start chasing 20 different pathways/causes, is there one direction I should examine first? I'm hoping there is a pyrotechnic fuse I haven't been able to identify that will explain all of this.
Thank you.
The ex dead battery is still likely and hopefully the cause of your troubles.
A Foxwell scanner may be able to help you find a fault but after such a dead battery for such a long period the whole CANBUS may need to be AMDS rebooted or programed by a dealer.
That probably isn't too expensive once you've got your car there.
The Foxwell scanner goes a little beyond normal OBD level but cannot bring whole modules online that are not present.
Good luck.
A Foxwell scanner may be able to help you find a fault but after such a dead battery for such a long period the whole CANBUS may need to be AMDS rebooted or programed by a dealer.
That probably isn't too expensive once you've got your car there.
The Foxwell scanner goes a little beyond normal OBD level but cannot bring whole modules online that are not present.
Good luck.
It has a new battery.
The Foxwell got me those codes.
My Autel couldn't even identify a car was present. It was mighty confused.
I'll pull all of the fuses, one by one. It sounds tedious, but I understand why it's a good idea.
The nearest Aston dealer is 4 hours away. I'm hoping to avoid that trip, but I knew it was a possibility when I bought the car.
Thanks, everyone.
The Foxwell got me those codes.
My Autel couldn't even identify a car was present. It was mighty confused.
I'll pull all of the fuses, one by one. It sounds tedious, but I understand why it's a good idea.
The nearest Aston dealer is 4 hours away. I'm hoping to avoid that trip, but I knew it was a possibility when I bought the car.
Thanks, everyone.
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