PHEV system fault service required (warning)

[twiggy144]

Incident this morning. Here's how the story goes.
Temperature all night: -15C Outlander unplugged all night, (was fully charged the previous day).
Power on the car: message displayed: Charge lid is open (warning).
Got out of the car, walked to charge lid, was partially open, I closed it, returned to the driver's seat.

New text warning messages displayed in the dash:

• Power reduced warning
• PHEV system fault power reduced service required (warning)
• PHEV system off stop safely (warning)
• PHEV system fault power reduced stop safely (warning)
• PHEV system fault service required (warning)

In addition to these text warnings, I got these lights:

• Check engine light
• Plug-in hybrid EV system warning light
• Forward collision mitigation off system light
• Rear automatic emergency braking system off warning light

Decided to drive anyway. Power and acceleration was considerably reduced. ICE did not turn on even when forced. Max attainable speed was 75 kmph. No cabin heat (ICE was not running and not heat pump at –15C).

After 15 km of driving, decided to stop, turn off all power, turn power back on, . ICE decided to turn on. Shift lever in D and drove-off. Now had full acceleration and achieved highway cruising speed. Now with cabin heat from ICE.

Arrived at my destination 20 km later. Parked the far and turned off power. Had breakfast with my buddies. Two hour later, powered up the car. This time text warnings in display all gone, but following lights remained on:

• Check engine light
• Plugin hybrid EV system warning light
• Forward collision mitigation off system light
• Rear automatic emergency braking system off warning light

Drove-off. Got back home, 35 km ride. Turned power off. Waited a few seconds. Power on. TADA: all warning lights are gone. All warning text messages that were already gone, did not come back.

Brand new 2025 Outlander PHEV picked-up 5 days ago at the dealer with 7 km on the odometer. Drove 200 km so far when this incident happened this morning.

I don’t have a specific question pertaining to this incident, but feel free to step into this discussion with your comments.

If this issue looks like related to sub-zero temperature operation, moderators feel free to move this thread.

Cheers!

 

[PHEV07]

Incident this morning. Here's how the story goes.
Temperature all night: -15C Outlander unplugged all night, (was fully charged the previous day).
Power on the car: message displayed: Charge lid is open (warning).
Got out of the car, walked to charge lid, was partially open, I closed it, returned to the driver's seat.

New text warning messages displayed in the dash:

• Power reduced warning
• PHEV system fault power reduced service required (warning)
• PHEV system off stop safely (warning)
• PHEV system fault power reduced stop safely (warning)
• PHEV system fault service required (warning)

In addition to these text warnings, I got these lights:

• Check engine light
• Plug-in hybrid EV system warning light
• Forward collision mitigation off system light
• Rear automatic emergency braking system off warning light

Decided to drive anyway. Power and acceleration was considerably reduced. ICE did not turn on even when forced. Max attainable speed was 75 kmph. No cabin heat (ICE was not running and not heat pump at –15C).

After 15 km of driving, decided to stop, turn off all power, turn power back on, . ICE decided to turn on. Shift lever in D and drove-off. Now had full acceleration and achieved highway cruising speed. Now with cabin heat from ICE.

Arrived at my destination 20 km later. Parked the far and turned off power. Had breakfast with my buddies. Two hour later, powered up the car. This time text warnings in display all gone, but following lights remained on:

• Check engine light
• Plugin hybrid EV system warning light
• Forward collision mitigation off system light
• Rear automatic emergency braking system off warning light

Drove-off. Got back home, 35 km ride. Turned power off. Waited a few seconds. Power on. TADA: all warning lights are gone. All warning text messages that were already gone, did not come back.

Brand new 2025 Outlander PHEV picked-up 5 days ago at the dealer with 7 km on the odometer. Drove 200 km so far when this incident happened this morning.

I don’t have a specific question pertaining to this incident, but feel free to step into this discussion with your comments.

If this issue looks like related to sub-zero temperature operation, moderators feel free to move this thread.

Cheers!

Sorry to hear that you are experiencing these problems on your brand new 2025.

Yes it does sound like a Cold Weather issue I think it is as a result of the new software.

Please check the Battery Temperature Screen. If the Bar is to the left of the left Vertical white line, issue is probably due to a cold Nain Battery.

For now, while the temperature is higher than -20'C. Start your car, let it run for at least one minute then turn it off and start it again to see if it improves. If it does not then Start it again and let it warm up for at least 4 minutes, and the car should start working normally.

Plz keep us updated on this issue and by all means check out and comment on your finding in the thread I started on whether the Battery warms up by charging

 

[twiggy144]

Température right now is-7C. After 9 hours charging on 110v, km battery went from 0 km to 50km. Pressed the ON button without pressing brake pedal. Everything looked fine in the dash, no warnings. Battery température gauge was approximately 2/5 up from Mostafa left position. Will keep charging câble hooked to thé car all night. Expect everything to be ok tomorrow morning.

 

[twiggy144]

As expected, all was fine this morning. Car was plugged all night, morning temperature -9C.

 

[BobK]

The forward collision mitigation and rear emergency braking messages could be because of a build up of ice, slush or dirt on the sensors. A good clean of all of them (and the cameras while you’re at it) should fix it, though it may not last long in messy weather.

 

[twiggy144]

BobK, You are right! There was 13 cm of snow on the vehicule, which I had not completely broomed off. This is my first vehicule with a front collosion prevention system. I am not used to brooming the snow completely off the windshield, where the radar is mounted. For the rear, indeed there was still snow on the rear bumper.