Heuer

The Lithium drop in lead/acid replacements have onboard battery management so appear to the car as standard. They are becoming popular replacements and cost about £100.

Given the dealers seem to attribute the bad battery problem as "user error" or "no fault found" I think they will look for any excuse to blame the owner for fitting a 'bigger' one regardless of the fault! Not sure I want to take the chance. Having said that there are now replacement Lithium 12v batteries which are light and small. Should be able to get a 60aH in there.

Quick question on battery replacement. Will fitting a larger capacity Yusaa HSB 202 45aH battery invalidate the Lexus warranty as it is out of spec?

Waze (owned by Google) is the best navigation app by a long way. It has real time updates from other Wazers giving information about stranded cars, Police cars/vans/traps, potholes and traffic. It is free and can be set as the default navigation app for Android Auto or Apple Car Play. Your Android phone should have Android Auto baked in so just plugging your phone into the car should make it appear.

Hi Don I am thinking of doing this swap as it is more cost effective than buying a quality jumper pack. Any chance you can list the steps in accessing the battery along with hints on how to do it without breaking any of the trim? Thanks David

Have you tried replacing the key fob battery? They seem to have a limited life even when the car is new, maybe a factory quality issue. They only cost about £2 each (CR2032) and are readily available from Amazon in multi packs. I only saw one warning message from the car before the fob failed completely.

I have had the washer low alert a couple of times but it stops once the reservoir is empty - basically a warning and you then have two washes left!

You can switch the second key into sleep mode: The battery-saving function will be activated in order to prevent the electronic key battery and the 12-volt battery from being discharged while the vehicle is not in operation for a long time. ● In the following situations, the smart entry & start system may take some time to unlock the doors. • The electronic key has been left in an area of approximately 3.5 m (11.5 ft.) of the outside of the vehicle for 40 seconds or longer. • The smart entry & start system has not been used for 5 days or longer. ● If the smart entry & start system has not been used for 14 days or longer, the doors cannot be unlocked at any doors except the driver’s door. In this case, take hold of the driver’s door handle, or use the wireless remote control or the mechanical key, to unlock the doors. ■ Turning an electronic key to battery saving mode: When battery-saving mode is set, battery depletion is minimized by stopping the electronic key from receiving radio waves. Press twice while pressing and holding . Confirm that the electronic key indicator flashes 4 times. While the battery-saving mode is set, the smart entry & start system cannot be used. To cancel the function, press any of the electronic key buttons."

Have you changed the remote battery CR2032. I have a feeling that when it is low the car polls it but does not get a proper response back from the key so keeps trying. Worth a try ?

Change the key battery ASAP - CR2032 from Amazon.

I see the AA Wireless 2 has been released although they immediately sold out: https://www.aawireless.io/products/aawireless-two Differences between this an old one seem to be size and a button to swap between phones.price is 59 Euros.

Many other manufacturers (Porsche, BMW, MB etc) have a steering wheel button to disable the over speed warning. As we have programmable wheel buttons it should not be difficult to include that as an option or permanent fixture.

I had a HUD in my BMW Alpina B5 Touring but the screen could not be fitted with the de-icer because of it. I asked the Alpina factory why and they explained the HUD requires the laminate to be wedge shaped (thicker at the bottom than the top) for the car to be able to project and reflect the images. This meant the heating elements could not be fitted and even if they could be the image would distort. My Range Rover Sport had a heated screen but it severely compromised the range of the garage door/gate remote control. Lexus get around the HUD limitation by only heating the base of the screen to release the wipers.

The LBX manual says the 12v battery is good for just over three weeks when the car is left left unused (they give an example of an airport stay), which ties in with your calculations. Any more than that and you will need a power pack or assistance.