Lost Range - ZDX TypeS 2024

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Old Apr 21, 2025 | 09:01 AM
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Lost Range - ZDX TypeS 2024

I recently had an software update and my car lost range.
I am
not sure how to describe but my 80% used to be 389 and 391 range, now it is fluctuating between 365 to 381. Any thoughts?
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Old Apr 21, 2025 | 09:44 AM
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Mine has been gaining range, but it is because I have been driving noticeably less aggressive. The estimated range is based on your driving habits, based on how many miles you usually get out of each kWh of energy, so if you are aggressive the estimated range will drop.
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Old Apr 21, 2025 | 07:08 PM
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Originally Posted by billjay
Mine has been gaining range, but it is because I have been driving noticeably less aggressive. The estimated range is based on your driving habits, based on how many miles you usually get out of each kWh of energy, so if you are aggressive the estimated range will drop.
i actually very cautious on pedal pressure. Right after software uodate it is just keep changing. I haven't seen any physical changes yet (or haven't recognized) but it suppose to improve battery management system. Did you have the same update?
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Old Apr 23, 2025 | 08:41 AM
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You didn't lose range. It's the BMS resetting after an update. The range will stabilize after a few drive cycles.

Also - batteries don't store miles. They store energy. There are MANY variables at play that will skew how far you can drive on that energy, some as simple as how fast you drive, others as complicated as head/cross winds, elevation changes, ambient temp, and battery temp.
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Old Apr 23, 2025 | 02:03 PM
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Originally Posted by civicdrivr
Also - batteries don't store miles. They store energy. There are MANY variables at play that will skew how far you can drive on that energy, some as simple as how fast you drive, others as complicated as head/cross winds, elevation changes, ambient temp, and battery temp.
That's exactly right and worth highlighting again. This is no different than efficiency in a gas car either, so I'm not sure why so many EV people get caught surprised by this. Drive a gas car harder, you get less mileage on a full tank of gas. The only diff is how quickly you can refill gas.
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Old Apr 23, 2025 | 02:44 PM
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Originally Posted by billjay
That's exactly right and worth highlighting again. This is no different than efficiency in a gas car either, so I'm not sure why so many EV people get caught surprised by this. Drive a gas car harder, you get less mileage on a full tank of gas. The only diff is how quickly you can refill gas.
I was going to say exactly that last part but then you said it. With our gas car I don't care stepping on the gas because to start with, I get better millage per fill, gas stations are everywhere and filling up takes very little time. Also unless you go to Costco, there is no line. And even with a line at Costo, you get to a pump within minutes. Not so much if you wait in line to charge your EV...We mostly drive the car locally and when we do, I don't care about miles/kWh. We just wait until it falls to 20%-30% and then plug it in at home.
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Old Apr 24, 2025 | 10:22 PM
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If you have a home charger, you should know the ABCs - Always Be Charging. Plug in every night. It's the cheapest and most efficient way.
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Old Apr 25, 2025 | 10:38 AM
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Originally Posted by civicdrivr
If you have a home charger, you should know the ABCs - Always Be Charging. Plug in every night. It's the cheapest and most efficient way.
We actually do not do that. We wait until it falls down to 20%-30%, unless of course we know we need more. It was my understanding that for battery health, it's better to let it go down to about that percentage just as it's better not to charge over 80% all the time, unless you know you need more. Is that incorrect?
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Old Apr 25, 2025 | 10:59 AM
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I usually (nearly always) L2 charge at home, to 80%. Mostly twice a week, getting down to 50% to 65%. I seldom go under 50%, and seldom go over 80%. This seems to be the prevailing wisdom.

However I have heard that GM claims their nickel-colbalt-magnanese-aluminum Lithium ion batteries can handle frequent 100% charging and frequent DC fast charging with no ill long term effect. Apparently the aluminum is a key factor in that. See this:

https://www.caranddriver.com/feature...ectric-future/

Worth noting, that article came out before any Ultium products were sold to the market. And I have yet to find any other source to confirm that article is still true. In fact I believe it is no longer true, as GM appears to now recommend charging to 80%, and going to 100% only before long trips, as well as fast charging only on long trips and not on a frequent basis. They also recommend against frequently letting the battery go below 20%, as deep discharges are apparently just as bad and full charging.
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Old Apr 28, 2025 | 04:35 PM
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As a new ZDX owner, this is great info-thanks everyone! I drive my car just 4-6 miles a day (to work & home, maybe to grocery store) and always worry I don't have enough charge if I'm below 70%. But sounds like anywhere between 30-80% I'm good as gold! No pedal to the medal unless I have to pass a slow poke on the freeway LOL
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Old Apr 30, 2025 | 01:56 AM
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Do you still see range drop after BECM settles down?
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Old May 8, 2025 | 09:10 PM
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Originally Posted by sonyfever
Do you still see range drop after BECM settles down?
hey team, all, it looks like I don't rrecieve any emails as if someone replied or not. My range has been fluctuating between 360 to 379 while when I got for the first time I was dead on between 390 to 391 (km in 80%).

I understand driving habits and etc, however based on my measurements I can easily say that each 70km trip, I record of less of a 10km range (especially compared to cold and windy weather's, while I do not have that anymore)

one think to notice, when I do city driving it most doesn't spend any range (we have good weather now) in addition, when I come back to car, the ranges goes up around 5km or so... I checked the regen and I do not regen 5km (i live in a very small town).

i checked some forums in Lyriq, they had similar updates but some people talks about range increase. I had an range decreased because I have a Type-S model ?

one other change that i can physically feel, when I want to give an extra gas, now it makes a kick and makes the acceleration like turbo engagement or downshift drive. You can actually feel it if you pay attention your foot when you are moving the gas pedal. Do you think they put like eco stage vs non eco stage ?
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Old May 9, 2025 | 01:11 AM
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one other change that i can physically feel, when I want to give an extra gas, now it makes a kick and makes the acceleration like turbo engagement or downshift drive. You can actually feel it if you pay attention your foot when you are moving the gas pedal. Do you think they put like eco stage vs non eco stage ?
Initially, that was what I suspected. This is an Acura, so VTEC and non-VTEC make total sense, right?

Later on, I read that the pause is to synchronize the front and rear motors. What exactly that means, I have no idea.

The pause has been addressed by a recent OTA on MY24 Lyriq. ZDX should get the update as well, eventually.
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Old May 9, 2025 | 02:20 AM
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Originally Posted by sonyfever
Initially, that was what I suspected. This is an Acura, so VTEC and non-VTEC make total sense, right?

Later on, I read that the pause is to synchronize the front and rear motors. What exactly that means, I have no idea.

The pause has been addressed by a recent OTA on MY24 Lyriq. ZDX should get the update as well, eventually.
interesting that you brought up front and rear motor (lol until beginning of april, i always thought i had 3 motors but i was wrong). I think this could be front wheel vs all wheel drive engaement (not too sure but a theory)

Do you a lyriq too??? Cool, do you feel quality difference on material usage between lyriq vs zdx, my high level view zdx has way too many plastic touches that my previous mdx(s)
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Old May 10, 2025 | 06:55 AM
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Originally Posted by sonyfever
Initially, that was what I suspected. This is an Acura, so VTEC and non-VTEC make total sense, right?

Later on, I read that the pause is to synchronize the front and rear motors. What exactly that means, I have no idea.

The pause has been addressed by a recent OTA on MY24 Lyriq. ZDX should get the update as well, eventually.
I hope we get an update for this soon. The downshift sensation is very noticeable in my car, typically when I roll onto the throttle from 35mph, as I cross over 40mph. Its very un-EV like, and I don't like it.

Regarding range - my Type S displays 232 to 242 miles at 80% charge. But as I mentioned earlier in the thread, there are way too many variables at play, and the car can only give out it's best guess.
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Old May 10, 2025 | 01:44 PM
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Originally Posted by Xsentius
interesting that you brought up front and rear motor (lol until beginning of april, i always thought i had 3 motors but i was wrong). I think this could be front wheel vs all wheel drive engaement (not too sure but a theory)

Do you a lyriq too??? Cool, do you feel quality difference on material usage between lyriq vs zdx, my high level view zdx has way too many plastic touches that my previous mdx(s)
No I don't have a Lyriq, just like browsing Lyriq forum and reddit to gain more visibility into the future. The intention is to see whether to keep the car at the end of lease.
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Old May 10, 2025 | 02:28 PM
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Originally Posted by sonyfever
No I don't have a Lyriq, just like browsing Lyriq forum and reddit to gain more visibility into the future. The intention is to see whether to keep the car at the end of lease.
nice call,

Do you think we can keep the car for 10 years ? Many tesla owners can keep their car for so long with minimal maintenance
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Old May 14, 2025 | 10:59 PM
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Originally Posted by Xsentius
nice call,

Do you think we can keep the car for 10 years ? Many tesla owners can keep their car for so long with minimal maintenance
I cannot answer yes or no to the question, but I can give you a long reply😁:

Reliability: The Ultium EV motors seem robust. Perhaps not a surprise, since many moving parts are designed with high power, truck usage in mind. The battery is too early to say. There are many stories about the "service high voltage system" message, but so far no systematic, widespread battery pack issue. However, GM must have seen enough battery pack replacements under warranty, that they opened an ongoing investigation to comb through field data.

The paint is undoubtedly fragile. Rock chips are inevitable. I wish I had applied PPF to the car, but I also wonder if the paint will be easily damaged during PPF removal.

Repairability: There are currently parts shortages across Ultium EVs, but two years from now, the supply should be much healthier. The reasons are obvious: Lease returns = more used/refurbished parts, and GM under no pressure to meet any EV production goals. Finding a knowledgeable place to repair Ultium EVs will be the question by then.

Cost: Obviously, ZDX shares a lot of parts with its Ultium cousins. The scale of GM should drive cost down. However, be aware that parts can still be expensive. For example, the front air springs on MDX Type-S are about $3k a pair. On ZDX, they are $4.5k, and must be ordered in pairs. The leather-wrapped trim that spans more than half of the dashboard is $1.5k. The MDX one, also leather-wrapped and in my opinion of better quality, only costs a little over $300. UAW tax maybe?

Software support: Still a question mark hanging on the long hood. The two OTAs were promising, then came the long pause while Lyriq received quite a few. From the three OTAs released so far, I feel ZDX lags behind Lyriq by one to two months. If the theory is right, we should see at least one OTA update in May/June timeframe.
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Old May 19, 2025 | 03:36 PM
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Originally Posted by sonyfever
I cannot answer yes or no to the question, but I can give you a long reply😁:

Reliability: The Ultium EV motors seem robust. Perhaps not a surprise, since many moving parts are designed with high power, truck usage in mind. The battery is too early to say. There are many stories about the "service high voltage system" message, but so far no systematic, widespread battery pack issue. However, GM must have seen enough battery pack replacements under warranty, that they opened an ongoing investigation to comb through field data.

The paint is undoubtedly fragile. Rock chips are inevitable. I wish I had applied PPF to the car, but I also wonder if the paint will be easily damaged during PPF removal.

Repairability: There are currently parts shortages across Ultium EVs, but two years from now, the supply should be much healthier. The reasons are obvious: Lease returns = more used/refurbished parts, and GM under no pressure to meet any EV production goals. Finding a knowledgeable place to repair Ultium EVs will be the question by then.

Cost: Obviously, ZDX shares a lot of parts with its Ultium cousins. The scale of GM should drive cost down. However, be aware that parts can still be expensive. For example, the front air springs on MDX Type-S are about $3k a pair. On ZDX, they are $4.5k, and must be ordered in pairs. The leather-wrapped trim that spans more than half of the dashboard is $1.5k. The MDX one, also leather-wrapped and in my opinion of better quality, only costs a little over $300. UAW tax maybe?

Software support: Still a question mark hanging on the long hood. The two OTAs were promising, then came the long pause while Lyriq received quite a few. From the three OTAs released so far, I feel ZDX lags behind Lyriq by one to two months. If the theory is right, we should see at least one OTA update in May/June timeframe.
Omg, that's fantastic response.

Just an update :
I woke up with 400km with 82%
I woke up with 400km with 82%

2 days ago I had a long almost nonstop drive around 280km at 401, do you think software keep changing or us ut something to the with weather ?
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Old May 21, 2025 | 02:24 AM
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Probably from the long drive. Even on colder days (>5C), the car can show good efficiency after a long drive.
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Old Jun 10, 2025 | 08:05 PM
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Originally Posted by sonyfever
Probably from the long drive. Even on colder days (>5C), the car can show good efficiency after a long drive.
the weather has something to do with this as we are average 15 to 25 degrees and now my 82% is 418km
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