Lbeex

Ok, then I am going to verify it by measuring charge current and voltage. Anyway, trickle charger is not an option for me because I am simply ashamed that my new Lexus in underground parking has these wires going under the engine hood, unlike most of other cars around. I would use it in my second location in the countryside only, maybe. Jump starting - really efficient and fast recovery, but... : The booster(usually LiPo or better LiFePo4) should not be exposed to temperature above 75degC (in extreme cases fire hazard), so this is risky to keep the booster in the car, unless in winter. Keeping a booster in the car? OK but where? · Trunk: If 12V battery is flat you can’t open the trunk. You can access the car from driver door side manually but can you open the trunk before using the booster – probably not (not sure). · Inside: LBX storage compartments are rather small. Any ideas?

Ask Lexus to charge your car 12V battery to 100% capacity, and then after at least one hour later let them measure voltage - it should be 12.6 - 12.7V. If not battery is to be replaced at warranty conditions.

Smart! Thanks a lot!

@DaveGoddard It means that you switched off (inadvertently?) the “smart entry & start system” option in the car menu. Page 140 of the manual. Do not confuse with key battery saving mode. The smart entry & start system can be deactivated – page 556 Battery-saving mode can reduce the power consumption of electronic keys page 149. If you switched of “smart entry & start system” in the car system menu, you need to have the key fob right next to the power button before pressing it.

I have just bough Ancel BM200 today, and first of all I measured its current consumption. It was around 2mA, and up to 4mA when connecting via bluetooth with just started application in my smartphone. So it is asits specification says: more or less 2.5 mA. My dealer's service agreed to install it. BTW: They replaced my defective 12V battery yesterday. Its showed 11.9 V when 100% charged, instead of =f 12.7V Anyway, I think that- despite of the monitor model - most interesting would be to get a feedbaack from LBX users at what voltage the problem with starting accurs. So far I know that 11.8V is still ok - cold morning reading.

I wish Lexus installed a plug to trickle charge at the rear seat cover of 12V battery. However the booster (i.e. jump starter) should be connected to the terminals as described in the manual. It is relatively simplest, most efficient and quick way to revive the car. Nevertheless the 12V battery issue is a blot on the landscape, and not because you need to spend another dollar for a booster or a voltage monitor or alike things, but because this is big reliability problem Lexuss seem to ignore, and especially that the LexusLBX system is not providing any efficient warning about 12V battery voltage!

I can tolerate vulnerability of the system due to 12V battery, and I think that could be counterbalanced by a users' know how, but Lexus is not supporting us at all. Why there is no way to check remotely the 12V battery actual voltage. If it is available, it could help us to anticipate no start/ locked door situation when it is required to use manual key and jump starting. I bought simple monitor (mentioned earlier) for that purpose. Today I measured its current draw and it is as stated - 0.0025 A. Chinese one, ok but …I would prefer Lexus one. Apart from that it's a great car. Winter time will tell more...and I hope no dismal news.

Could you please elaborate how to do it exactly in the LBX version without HUD? Screenshots/pictures appreciated!

Today, my Lexus dealer replaced LBX 12V battery. The charged it to 100% and got around 11.9 V which is far too low. So it was defective. It is the same voltage as I measured after 2 hour driving. Anyway, I asked if except jump-starter connected to the fuse box red terminal as described in LBX manual I can alternatively use a charger in place as a preventive measure? Surprisingly they said no, because this is dedicated only for jump starting (as LBX manual says), and a charger needs to be connected to 12V terminal directly. Noticed that the cars inside a dealer premises exposition are all connected to chargers and in case of LBX the cable runs under the rear seat to the battery compartment. OK but still I do not understand then why Lexus did not provide a socked on the 12V battery cover under rear seat to connect to it easily? I think they suggest to use jump starter as a simplest way, but then why do not they give it for free to each buyer. Also, the dealer service had no objection to install (not for free) a 12V battery monitor. Again, which also should be installed as a standard in out cars. There is not way to display actual voltage in LBX menu nor in Lexus Link+ application! The manual states there could be low 12V battery warning displayed, but it does not always prevents from discharging and start problem. Now, except that I am aware of ways to prevent discharging, and also ordered the battery monitor mentioned above, which draws 2.5mA which is ok. I am going to verify the current consumption and let you know.

Right, and I noticed also that AGM bateries (LBX case) actually need a charger that is designed to charge at 14.7 V in AGM mode. Sometimes standard chargers have so called winter mode in which the output voltage is increased and can be used for AGM charging.

Assuming that Lexus/Toyota engineers are smart anyway, I suspect that they sacrifice 12V battery life at cost of running out traction battery, since otherwise this would be really big issue in comparison to easy to recover 12V charge using a jump starter, particularly because this is users who pay for these boosters. Keeping your car at READY to charge 12V battery result typically in starting piston engine and thus emitting fumes – not an ecological approach, and often not permitted in many countries to run engine while car is stopped, due to pollution. I I asked GPT chat why producers prefer not to use proven solutions like alternators. Here is the answer( Note below the DC-DC converter issue mentioned due to high voltage configuration : “…manage power transfer between the high-voltage and 12V batteries…): You're right—while manufacturers design hybrid systems with efficiency and integration in mind, users often have different experiences and preferences. Many owners might find that traditional setups, like using an alternator, could seem more straightforward or reliable based on their familiarity with conventional vehicles. Here are some reasons why users might prefer a system with an alternator: Simplicity: An alternator system is familiar and straightforward. Many users understand how it works and can easily diagnose issues related to it. Reliability: Alternators have a long track record of reliability in conventional vehicles, which can lead to user trust. If a hybrid's 12V battery has issues, some may wish they could rely on a simple alternator instead. Ease of Replacement: Alternators can be easier to replace or service in many cases, as they're a common part that most mechanics are familiar with. Direct Charging: Users may prefer the idea of direct charging from the engine rather than relying on a secondary system to manage power transfer between the high-voltage and 12V batteries. User Control: With an alternator, users often feel they have more control over battery maintenance and care, compared to the more complex management systems in hybrids. These perspectives highlight a gap between manufacturer designs aimed at efficiency and user preferences for simplicity and reliability. As hybrid technology evolves, manufacturers may consider incorporating more traditional elements that resonate better with users, while still maintaining efficiency.

Even if a dead battery is replaced for a new one, the problem will probably reoccur, unless the old suffered due to improper treatment during shipment to and at the dealer site? BTW: my LBX battery failed on Friday, then I used a jump starter, then drove 1 hour, and another 1 hour on Saturday, and today (Sunday) I measured voltage at this red terminal in the fuse box (not in ready mode). It showed 11.98V

@dog3665 Sincerely, I wish you fast recovery. BTW: I had 12V battery issue just today Friday morning. This is my story: My LBX did not start today (25th Oct 2024) . Brake pedal oscillations, flashing control lights, paranoid reactions and finally dead, and locked doors so no access to anything (I was such a fool that I get out and closed the door). I was driving my LBX on Saturday around 85 km (54 miles) for about one hour. Then, on Wednesday I drive 10 km stopping 4 times (shop to shop drive). Then on Thursday I started engine for a couple of minutes and cleaned the windshield from inside etc. Main battery was charged to level 4. Then on Friday say 2 days from last drive, the 12V battery is dead. Last week temperatures above freezing! I was able to use the manual key, and then start my car, since I had jump-start booster and I was aware how to use it and connect it to LBX - read the manual! So even if I have this jump-starter or booster, these devices have limited life in terms on number of recovery starts. I just bought a second one, because I am staying usually in two locations. I am going to double check LBX battery at Lexus service o Monday and let you know outcomes. Nevertheless, I am not going to generate aversion to LBX, but I am personally disappointed, particularly he solution could be simple: The LBX software is communicating a lot of messages more or less important – so why it is not displaying or sending to My Lexus application any warning on 12V battery state before it is dead. Why there is not a simple socket in the vicinity under the rear seat (where this 12V poor guy is located) - this would help a lot regarding access, and avoiding opening the hood, connecting cables etc. Anyway, this is absolutely disappointing! Lexus is assuming that LBX is city car but not for elderly and /or retired people. That sucks. Sorry guys. I am considering getting rid of this car. Shame on Lexus

When using AA via Ottocast, and Google Maps navigation, are voice commands interrupted by Lexus LBX speed limit exceedance ding-ding-ding sound? I have this issue when using USB cable to connect my smartphone, i.e. standard way to connect.

My experience is as follows: 1 . Lexus dealers in my area were not able to explain this behavior after 3 months from LBX buy date (sic). 2. Alarm installer said that their alarms did not emit any beeps. 3. Eventually I discovered when it happened: If you open and close also rear door before starting the car, then if after stopping and getting out of the car you not open and close rear door, you will hear the warning beeps closing the car. Alternatively, when you switch off the engine, you may see a warning and message diplayed that you may press and hold ok key to disable beeps this time only. (I do not have HUD so the message is displayed on the console)