[AlanWMS]

The biggest theory, at least here in Canada is either the DCM is continually searching for a cellular connection to the Toyota satellite, or that ice and snow, or possibly mud on the kick sensors prevents the sensors from turning off.

My battery died 15 times in December and January, but when I made an effort to wipe the ice and snow off the sensors on the rocker panels, battery stopped dying.

Disabling the DCM could work but be fore-warned, this will disable the hands free microphone.

I was at my Canadian dealer last week, and there is no word on a kick sensor fix.

There is a DCM fix in the USA but not in Canada for the 2022 Sienna. Although Rav4 and Highlanders got a DCM fix for 2022 in addition to the Camry.

In regards to the battery, I have it on good authority that the kick sensors when blocked will drain the battery - This is caused by dirt or more likely snow,

 

[Vanman999]

In regards to the battery, I have it on good authority that the kick sensors when blocked will drain the battery - This is caused by dirt or more likely snow,

Thanks for all of these posts. It seems to exactly describe the issue I had.

We have a 2022 Sienna platinum with 2560 miles on it. I went to get into the van and start it but and I received parking brake unavailable messages on the display, interior lights were dim and the van would not start. The van was last driven 6 days before in a snowstorm and then was parked in the garage where all of the snow melted off. The garage was 40+ degrees Fahrenheit so the van was in a warmer place.

After reading the posts I also determined that the 12 volt battery was depleted and then used a plugin battery charger for 5 to 7 mins to recharge the battery (instructions are in the owners manual) and then tried to start it up. It started fine, I disconnected the charger and then drove around the neighborhood for 20 mins and then disabled the hands free door sensors for the sliding doors and the lift gate.

I'm going to pickup a portable charger just to keep one in the van in case this issue happens again.

I'll try to update this post going forward. If this fix resolves the issue for me or not.

Thanks all!!

 

[Vanfam12345]

I'm going to pickup a portable charger just to keep one in the van in case this issue happens again.

They fit nicely beside the battery behind the panel ✌🏼

 

[Templeton]

Thanks for all of these posts. It seems to exactly describe the issue I had.

We have a 2022 Sienna platinum with 2560 miles on it. I went to get into the van and start it but and I received parking brake unavailable messages on the display, interior lights were dim and the van would not start. The van was last driven 6 days before in a snowstorm and then was parked in the garage where all of the snow melted off. The garage was 40+ degrees Fahrenheit so the van was in a warmer place.

After reading the posts I also determined that the 12 volt battery was depleted and then used a plugin battery charger for 5 to 7 mins to recharge the battery (instructions are in the owners manual) and then tried to start it up. It started fine, I disconnected the charger and then drove around the neighborhood for 20 mins and then disabled the hands free door sensors for the sliding doors and the lift gate.

I'm going to pickup a portable charger just to keep one in the van in case this issue happens again.

I'll try to update this post going forward. If this fix resolves the issue for me or not.

Not sure if this will also help, but we have a 15 year old prius with an old 12v battery and with smart keys (but no kick sensors) that we park outside. On very cold nights (below freezing or colder), we disable the smart key system (small button on the lower dash makes that easy). We noticed that, in extreme cold, the smart key system would also drain the old 12v battery (since the prius and sienna has a smart key radio receiver that runs on the 12v system and is powered on 24/7). So that might be something to do for the Sienna to preserve its 12v battery as well.

 

[maureenpatterson]

Had this same issue with my 2022 sienna xse. It's been boosted 3 times in the last 9 mths we've owned it. They've replaced the battery once and now they've ordered replacement kick sensors, kick sensor motor and kick sensor computer. They said 4000$ worth of parts! Hopefully this fixes the issue! My FOB batteries keep dying too so I'm not certain this is the fix. Ive replaced each fob twice now too. Fingers crossed!

 

[noppy999]

Guys - I also have the same issue with my 22' Platinum, we live in New Hampshire and it got super cold last night, remote start wouldn't work, so I knew something was up. Went to the car and car wouldn't start... I've had this happen to me multiple times in the last 14 months I've owned the car. This is unacceptable IMO, and we do not want to be stranded anywhere if this were to happen unexpectedly - I'd like to put in a new battery that is larger in capacity than the one came with the car.

Do you folks have suggestions on the larger capacity battery and where to purchase?

FYI - I have Viofo A139 dashcam installed with the the hardware kit that apparently has a low voltage protection which should shut off the dashcam if it goes below a certain threshold- not sure if this is the culprit - https://www.amazon.com/VIOFO-HK3-C-...0e-82d2-56caaeb9dd23&pd_rd_i=B08TW9BBGB&psc=1

Any help would be greatly appreciated! Thank you!

 

[pamhar]

Guys - I also have the same issue with my 22' Platinum, we live in New Hampshire and it got super cold last night, remote start wouldn't work, so I knew something was up. Went to the car and car wouldn't start... I've had this happen to me multiple times in the last 14 months I've owned the car. This is unacceptable IMO, and we do not want to be stranded anywhere if this were to happen unexpectedly - I'd like to put in a new battery that is larger in capacity than the one came with the car.

Do you folks have suggestions on the larger capacity battery and where to purchase?

FYI - I have Viofo A139 dashcam installed with the the hardware kit that apparently has a low voltage protection which should shut off the dashcam if it goes below a certain threshold- not sure if this is the culprit - https://www.amazon.com/VIOFO-HK3-C-...0e-82d2-56caaeb9dd23&pd_rd_i=B08TW9BBGB&psc=1

Any help would be greatly appreciated! Thank you!

Dealership might try to put fault on the dashcam.

Can try to unplug for a week or so [use 12V or USB to power] and see if any difference.

 

[cougarhound]

This is unacceptable. They obviously cheaped out on the 12V battery size and the inverter that charges it. Now that I think about it, I remember the salesman having to jump my Sienna before I bought it. It was on the demo floor though. I haven't had any problems since. If I do I'll prob find a bigger battery to put in and complain.

 

[cougarhound]

Thank you, I'll make sure to mention your situation to our dealership. This is encouraging if it can be fixed with a simple update.

We just had to boost our Sienna again this morning, for the viewing pleasure of our euro cars mechanic neighbour, who asked "how the new car was going" with the sh*ttiest of grins, while holding the other pair of reds and blacks...

Hope the software update does the trick for you!

Haha. Those VW guys always come out of the woodwork when a Toyota fails.

 

[azbayar.enkhbayar]

Has anyone come across a 2022 sienna that has to be jump started almost every morning - especially in the cold? Dealer couldn’t recreate the problem when we brought it in. Is there something that we are doing that is draining the battery? It’s not the lights we are militant about making sure the dome/map lights are off. thanks, Andrew

Hi, recently I am having same issues. Last three days, i have to jump start the car every morning. I have also 2022 Sienna Platinum. I went to toyota dealer and they said it is ongoing issue for newer Siennas. They do not have the right solutions yet. They turned off the sensor underneath the rear bumper to open the back door. They said it is draining the battery when it is idle. Let see what happens tomorrow morning. I ll post you update!

 

[azbayar.enkhbayar]

Hi, recently I am having same issues. Last three days, i have to jump start the car every morning. I have also 2022 Sienna Platinum. I went to toyota dealer and they said it is ongoing issue for newer Siennas. They do not have the right solutions yet. They turned off the sensor underneath the rear bumper to open the back door. They said it is draining the battery when it is idle. Let see what happens tomorrow morning. I ll post you update!

After Disconnecting the sensors for the back door opening, my car started this morning bu using my app. So it actually worked!

 

[scowsailor]

I just joined this because my new 2022 Siena Platinum got 4 jumps in 5 days. I guess I can thank Toyota for not telling me and the 12" of snow on my driveway for helping cause this. My car is at the dealer now waiting for replacement parts that don't have an arrival estimate. They gave me a loaner car but I've asked them to disconnect the sensors so I can drive my car and not the little loaner they gave me. Is this another sign to retire to the south?

 

[azbayar.enkhbayar]

I just joined this because my new 2022 Siena Platinum got 4 jumps in 5 days. I guess I can thank Toyota for not telling me and the 12" of snow on my driveway for helping cause this. My car is at the dealer now waiting for replacement parts that don't have an arrival estimate. They gave me a loaner car but I've asked them to disconnect the sensors so I can drive my car and not the little loaner they gave me. Is this another sign to retire to the south?

After disconnecting the back door opener sensor, I have no more issues with the battery. It starts just fine with app

 

[joe.clifton]

Thanks for the advice. I’m in the same situation with consistent dead battery every morning. I was thinking it was the snow tires and faulty pressure sensors until I came across this thread. I’ve just turned off my tailgate sensor now. Fingers crossed for an update from Toyota sooner than later…

 

[cougarhound]

Thanks for the advice. I’m in the same situation with consistent dead battery every morning. I was thinking it was the snow tires and faulty pressure sensors until I came across this thread. I’ve just turned off my tailgate sensor now. Fingers crossed for an update from Toyota sooner than later…

Based on this thread, it seems to affect a lot of Canadians. I don't think this is a coincidence. Lol.

 

[Broncofan]

I counted 115 posts with this same issue, and few, if any, got the issue resolved by the dealer. While I cant speak for Canada, USA has a "lemon law". You should be able to count on the vehicle starting. I can understand, of course, batteries fail and so do other components. But, for it to happen repeatedly, over and over, by multiple 2022 sienna owners, sounds like its likely a software issue, and toyota need to fix this, probably by upgrading the software to the 2023 version, at their expense. (hardware or software, as necessary).

If I paid 46 grand for this car, and could not count on it to start, repeatedly, I would be contacting a "lemon law" lawyer.
I would probably print out this forum, because Toyota either "knows" or "should know" about this problem and fix it, not just in the 2023's, but in the 2022's too.
Sometimes you have to get tough with them, and, not knowing if your new car will start in the morning, which they cant/wont seem to fix, warrants a call to the lemon law lawyer.
Nissan had a multi million dollar class action lawsuit, because their CVT's in many models failed, often just after warranty expired.
It actually happened with my daughter who bought a new 2014 Sentra, one of the models Nissan knew had CVT issues. After about 50k miles the tranny failed in the nissan..and, probably because of the class action lawsuit, nissan replaced the tranny, gave her a loaner car while it was repaired, and extended the warranty another 50,000 miles or so.
Nissan, apparently had to be forced into this, but car companies with good reputations should mostly do this volunatiraly without being forced by lawyers into fixing their cars.
Im gonna be watching this, and, if this continues, with Toyota "hanging customers out to dry", by raising their hands and saying, "I dunno why it wont work", then I wont buy another Toyota.

 

[Broncofan]

If Toyota is listening, then, I can tell them like the cops sometimes say on TV: "We can do this the easy way (Toyota fix the problem regardless of cost) or the hard way". The hard way is by toyota making this problem the customers problem, when it should be the companies problem, and forcing a class action lawsuit.

For any owners who are experiecing this problem, repeatedly, I recommend contacting a "lemon law" law firm, if Toyota cant/wont fix it satisfactorily, and it would appear they wont.

 

[JSpallanzani]

If Toyota is listening, then, I can tell them like the cops sometimes say on TV: "We can do this the easy way (Toyota fix the problem regardless of cost) or the hard way". The hard way is by toyota making this problem the customers problem, when it should be the companies problem, and forcing a class action lawsuit.

For any owners who are experiecing this problem, repeatedly, I recommend contacting a "lemon law" law firm, if Toyota cant/wont fix it satisfactorily, and it would appear they wont.

I thought there was a bulletin already issued by Toyota to fix the problem. I would think all Siennas will be fixed easily?
Funny how when I went into my dealership to test drive the car a year ago, it was dead. He was able to drive it to park it inside but then it would no longer start when I went in it. I had to come back the week after to test it. Battery was dead, dealership had no clue why and said that it stayed outside in cold temps for a few days.

 

[steve.spencer21.ss]

Our 2022 has hands free sliding doors. Turns out they get dirty from snow and such and the sensor thinks they are being active. Daring the battery. We just had the front end worked on from an accident. The sensors I turned off were back on(probably the technician) and it. Just drained it again. Go to vehicle setting and PSD turn off hands free.

 

[cougarhound]

Our 2022 has hands free sliding doors. Turns out they get dirty from snow and such and the sensor thinks they are being active. Daring the battery. We just had the front end worked on from an accident. The sensors I turned off were back on(probably the technician) and it. Just drained it again. Go to vehicle setting and PSD turn off hands free.

Never could get that thing to work. Feels like a gimmick to me anyways. Same thing with the key fob remote start. Supposedly there were workplace challenges cause they built the Sienna during quarantine.