Car dies after few minutes

[peterek]

I'm helping my friend to figure out whats wrong with his Fisker.
Car has about 57k miles , was bought on auction with damage to rear, nothing significant just cracked bumper and dent to the trunk... we got the car charged up, and went for a drive... after quarter mile car slowed down and was not responding to gas pedal. i tried different modes with no luck, both drive and reverse gear gave same result, restarted the car - same thing.

So i tried hard reset by unplugging cable on passenger side, after reset car drove fine for another 0.5 mile and slowed down with no response from gas pedal. then i pulled out OBD 2 scanner and got bunch of codes:

P0A31: Drive Motor B Temperature Sensor Circuit Range/Performance
P0A37 Generator temperature circuit range performance
P0A3C Drive Motor A Inverter Over Temperature
P0A3D Drive Motor B Inverter Over temperature
P0A3E Generator Inverter Over Temperature
P0A4C Generator Position Sensor Circuit Range/performance
P0BEE Drive MOtor A phase W current sensor circuit Range/performance
P0BEF Drive motor A Phase W Current Sensor Circuit Low

i checked coolant level by front of the engine and it looked ok, i couldnt see coolant level on side of the engine bay as it was blocked by plastic covers

car had weak 12V battery that was replaced last week.

We would love to save this car...
Any guidance would be appreciated

[FiskerNL]

You should check the right hand coolant reservoir. It could be that they removed a hose to get better access to the battery ( not nescessairy) if you have air in the electronics cooling system it is hard to get it out. Normally the coolant pumps must run for a few minutes to clear the air. We always drain the complete system and fill it with a vacuum filling device.

[LonePalmBJ]

Originally Posted by peterek

I'm helping my friend to figure out whats wrong with his Fisker.
Car has about 57k miles , was bought on auction with damage to rear, nothing significant just cracked bumper and dent to the trunk... we got the car charged up, and went for a drive... after quarter mile car slowed down and was not responding to gas pedal. i tried different modes with no luck, both drive and reverse gear gave same result, restarted the car - same thing.

So i tried hard reset by unplugging cable on passenger side, after reset car drove fine for another 0.5 mile and slowed down with no response from gas pedal. then i pulled out OBD 2 scanner and got bunch of codes:

P0A31: Drive Motor B Temperature Sensor Circuit Range/Performance
P0A37 Generator temperature circuit range performance
P0A3C Drive Motor A Inverter Over Temperature
P0A3D Drive Motor B Inverter Over temperature
P0A3E Generator Inverter Over Temperature
P0A4C Generator Position Sensor Circuit Range/performance
P0BEE Drive MOtor A phase W current sensor circuit Range/performance
P0BEF Drive motor A Phase W Current Sensor Circuit Low

i checked coolant level by front of the engine and it looked ok, i couldnt see coolant level on side of the engine bay as it was blocked by plastic covers

car had weak 12V battery that was replaced last week.

We would love to save this car...
Any guidance would be appreciated

The vehicle has independent cooling systems for the ICE engine, the HV battery system and the motors, generators and inverters. I'm no mechanic, but what you're describing sounds like a cooling problem to the third system, and may not be the coolant level you checked. Page 110 (20-4) of the service manual shows a coolant hose connector at the very rear of the car. I wonder if the rear damage you observed also includes damage to the motor coolant lines. My suggestion is to review the Service Manual (you can download it here: https://www.dropbox.com/s/2t0z3x5wpv...ice_Manual.pdf ) and see if there's any obvious damage or blockage to the coolant loop.

Good luck!

[peterek]

Thank you for pointing me to right direction .... does anyone know what type of coolant karma uses ? I’ve read service manual but it doesn’t say...

[SirCastic]

Originally Posted by peterek

Thank you for pointing me to right direction .... does anyone know what type of coolant karma uses ? I’ve read service manual but it doesn’t say...

Please refer to the attached picture.

However, you can't just put coolant in …
The system needs to be bled in a certain order using Prodis (Fisker Service Computer).

[Mikey43]

I had same problem last year, except that check engine light was on.
Had to repair a cell and replace contacts.

[peterek]

looks like a sensor for coolant in the rear was cracked and this is were all fluid leaked out, we managed to find replacement part which is a nissan titan part !... will try to install it this thursday , not sure if we need a fisker tool to flush the fluid or just fill it out start the car and hope for the best

[SirCastic]

Originally Posted by peterek

looks like a sensor for coolant in the rear was cracked and this is were all fluid leaked out, we managed to find replacement part which is a nissan titan part !... will try to install it this thursday , not sure if we need a fisker tool to flush the fluid or just fill it out start the car and hope for the best

Well, it´s a shared coolant system and you have to make sure the bleeder screws are the highest point of the cooling system. Put the rear of the car as high as possible and purged of any air bubbles from the inverters in the trunk.

The only way to properly bleed the inverters is to operate the pumps via the scan tool, be careful so you don't overheat your expensive inverters and other components…