DEAD CAR IN WINTER

[Metv707]

There should be recall on this issue as getting stuck in -40C can have fatal consequences. I'm surprised how Ford has not reacted to the issue yet as it is concern for buying vehicle for most Canadians and Many in the States as well.

I imagine that in order to have a recall, an actual fix would have to be known.

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[Cabel]

Doesn't Canada have Lemon Laws? Here, if it has had the same problem that incapacitates the car over three times, and the dealer can't fix it, you can request that they buy back the vehicle.

 

[Shayne]

Doesn't Canada have Lemon Laws? Here, if it has had the same problem that incapacitates the car over three times, and the dealer can't fix it, you can request that they buy back the vehicle.

This is new model and new tech. Not even close to running to lawyers due to a couple of problems. I think Ford is quite aware at this point and hoping this can be fixed.

Been starting it every day to keep the 12V at a state of charge such that it will not freeze. Been working so far. Today it warmed up and I thought maybe a day off. When out, not at 9am like I have been, at 2:00pm and the damn 12V is sitting at 62%. Good thing I checked as it is going down below -25C again soon and at that rate of discharge it would sure be gone again when it got to -25C. Yesterday morning I got it up to 92% so that is a 30% drain in a little over a day sitting there not responding because it is asleep. If this has to go down to 40% soc before it does anything the 12V is destined to die. I am thinking mine maybe can be fixed with software and modifying its logic. Maybe not a hardware problem.

 

[Dhruval Shah]

This is new model and new tech. Not even close to running to lawyers due to a couple of problems. I think Ford is quite aware at this point and hoping this can be fixed.

Been starting it every day to keep the 12V at a state of charge such that it will not freeze. Been working so far. Today it warmed up and I thought maybe a day off. When out, not at 9am like I have been, at 2:00pm and the damn 12V is sitting at 62%. Good thing I checked as it is going down below -25C again soon and at that rate of discharge it would sure be gone again when it got to -25C. Yesterday morning I got it up to 92% so that is a 30% drain in a little over a day sitting there not responding because it is asleep. If this has to go down to 40% soc before it does anything the 12V is destined to die. I am thinking mine maybe can be fixed with software and modifying its logic. Maybe not a hardware problem.

How do you check 12v battery percentage?

 

[Shayne]

How do you check 12v battery percentage?

There is a few methods.

• Measure the voltage across the thermals of the 12V or where you charge it when car off. Makes sense to drill 2" holes thru the frunk cover with 2" plugs for access. Info on this forum and attached.
• You buy a 12V led that plugs into the 12V. Start it it will jump to 15V charging turn it off open and close the door and it will read the voltage of the battery as you sit. You need to guesstimate a soc. something like this
• Buy an OBD2 dongle i have a odblink MX+ and carscanner app right now but MX+ is compatible with other apps like forscan etc. It gives voltage soc etc. on dashboards you can mod and set up. Like this.

Wish I did not know all this.

Edit pdf modified confusing scaled dimensions removed.

 

[Shayne]

Porsche Taycan has a Li 12v battery and it had so many issues with bricked cars the first 1.5 year.
Most problems are not because of the battery chemistry but rather because of software that manages the battery and/or the converter hardware.

Good thing I did not buy a Taycan.

I have wondered if there is a lithium 12V replacement option for the MME? They should not get damaged if they freeze like a lead acid will. If they had a 50 ah lithium 12V it may be worth me trying it here. See if lithium out preforms lead acid in the long haul. 12V's die just not ever as fast as with the MME does for me.

 

[Maquis]

I have wondered if there is a lithium 12V replacement option for the MME? They should not get damaged if they freeze like a lead acid will. If they had a 50 ah lithium 12V it may be worth me trying it here. See if lithium out preforms lead acid in the long haul. 12V's die just not ever as fast as with the MME does for me.

Do some research, give it a try, and let us know how that works out.

 

[emperor-kebab]

Doesn't Canada have Lemon Laws? Here, if it has had the same problem that incapacitates the car over three times, and the dealer can't fix it, you can request that they buy back the vehicle.

There are no lemon laws in Canada. @Ford Motor Company will happily screw us Canadians every chance they can get

 

[Sitdown]

I imagine that in order to have a recall, an actual fix would have to be known.

Ding! We have a winner

Just hoping more ppl in the same boat chime in with their dealer's fix... Current solution looks to be replacing HVBJB & BECM. One confirmed fix posted here, and several others with same parts on order. my dealer is expecting the 2nd of the two tomorrow or Monday. Supposedly there is an "Emergency" order for them.

 

[Dhruval Shah]

Ding! We have a winner

Just hoping more ppl in the same boat chime in with their dealer's fix... Current solution looks to be replacing HVBJB & BECM. One confirmed fix posted here, and several others with same parts on order. my dealer is expecting the 2nd of the two tomorrow or Monday. Supposedly there is an "Emergency" order for them.

Let us know how it goes as soon as you get it.

 

[Shayne]

Do some research, give it a try, and let us know how that works out.

Thanks your support and blessing are appreciated. A compatible brand and model would help also.

Not really able to do anything right now as the 12V keeps dying here and the vehicle is under warranty. Possible putting in an after market 12V may deter them from fixing my problem. But a few years down the road I think for sure.

Maybe a 12V power supply similar to what powers a computers mother board since that is what they are becoming and do not depend or run the hole system off a 12V lead acid battery? Think as ev tech evolves we should see a 12V lead acid battery disappear.

 

[JimmyMachE]

• Buy an OBD2 dongle i have a odblink MX+ and carscanner app right now but MX+ is compatible with other apps like forscan etc. It gives voltage soc etc. on dashboards you can mod and set up. Like this.

Is your 12V battery mode always 4 when car is running? Mine is usually 2, then 0 with ignition off (no idea what it really means).

62 mA quiescent standby drain seems a bit high...

 

[Shayne]

Is your 12V battery mode always 4 when car is running? Mine is usually 2, then 0 with ignition off.

62 mA quiescent standby drain seems a bit high...

About -16C at that time? I have seen 0 also. I am not too sure what the numbers actually mean. Also not sure the app can be trusted all the time. The charging amps shoot up and then die quick almost like ford DCFC logic. Something not right here and it could be BECM? Here are my last codes from feb 1. Quiescent standby drain was 30 mA that day and mode 0.

 

[Maquis]

Thanks your support and blessing are appreciated. A compatible brand and model would help also.

Not really able to do anything right now as the 12V keeps dying here and the vehicle is under warranty. Possible putting in an after market 12V may deter them from fixing my problem. But a few years down the road I think for sure.

Maybe a 12V power supply similar to what powers a computers mother board since that is what they are becoming and do not depend or run the hole system off a 12V lead acid battery? Think as ev tech evolves we should see a 12V lead acid battery disappear.

My point is that in this type of use, L-Ion provides inferior cold-weather performance. Below freezing, the charge rate must be greatly reduced to avoid permanent damage. The 12V charging system in the MME is not calibrated this way.
I really think that an AGM battery is the best chemistry for this use, but there is an issue maintaining the charge level in some (if not all) of our cars. Ford needs to get it fixed.

That‘s what I should have stated originally, instead of being a smart-a$$. Sorry.

 

[Shayne]

My point is that in this type of use, L-Ion provides inferior cold-weather performance. Below freezing, the charge rate must be greatly reduced to avoid permanent damage. The 12V charging system in the MME is not calibrated this way.
I really think that an AGM battery is the best chemistry for this use, but there is an issue maintaining the charge level in some (if not all) of our cars. Ford needs to get it fixed.

That‘s what I should have stated originally, instead of being a smart-a$$. Sorry.

So you think I will never be slapping a new solid state lithium 12V in this? All good.

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