Avi-O Posted August 3, 2023 Posted August 3, 2023 Hi guys, I got the 2023 RZ 450e for a few days now. Love the car, but can't get over the fact that someone could grab the keys and take off with it. In an old car I had you would need to get a pin code correct to drive off with the car; even if you had the key. It is crazy to me that there is no such solution in the lexsus by default. I know the tesla as this option. Any creative/cheap solution you are using? Of course I have insurance, but still wouldn't somone driving with the car and stuff in it. -A
RX400h Posted August 4, 2023 Posted August 4, 2023 There are some alarm kits that allow you to use your phone to disarm your car. The kit works with many existing alarm systems. However most I've seen require an annual fee.
Les Lex 2018 Posted August 5, 2023 Posted August 5, 2023 Hi ya, Aviad! I wear cargo shorts or cargo pants and keep the key in the lower front pocket secured with velcro when shopping. I usually forget it's there because it's not required to lock or unlock the vehicle. You're not likely to lose it that way and if a pic-pocket tries to pick it, good velcro makes a loud distinctive sound. I was sitting in a waiting room and my RX 350 FOB fell out of the main side pocket. My wife had the 2nd key so the RX started off her key and I didn't know I lost it. Lexus wanted 500 to replace it, but the business looked around and found the FOB for me. There is no need for that to happen again.
Avi-O Posted August 17, 2023 Author Posted August 17, 2023 How complicated is it to have a extra pin code that turns the car on/off? I don't get this...
Les Lex 2018 Posted August 18, 2023 Posted August 18, 2023 There's a white 16 pin connector under the dash near and to the left of the steering wheel that has lots of uses, including use of a popular device that disables the use of the vehicle if the owner blows a certain alcohol level. You just need to find a vendor that has a device that mates with this port and is linked to a keypad or cell phone. That is old technology and it's been around for a long time. See what you can find out there that will fit your needs.
Surveyor1953 Posted January 3, 2024 Posted January 3, 2024 (edited) Do you know about the little ‘hidden’ feature on your key fob? Using this disables the ability for anyone to use a remote scanner for the wireless code your fob always transmits. I also use a Faraday pouch when I’m in the house. Just hold down the lock button while double tapping the unlock button. You’ll see a red light in the key fob blinking to show that the transmitter has been disabled. You can confirm this by attempting to open your car by pulling on the door handle. The puddle lights are also disabled. Press any key on your fob to return everything back to normal. Edited January 3, 2024 by Surveyor1953
Les Lex 2018 Posted January 3, 2024 Posted January 3, 2024 Hi Les! Your FOB uses a rolling or sometimes called hopping code to defeat the ability of someone to use a simple form of replay attack where an eaves dropper records the transmission code and re-uses it to unlock your vehicle. Same with garage door openers. Both your FOB and Vehicle use an encryption technique such that only your fob and the vehicle know what the next code is going to be. The spoofer has no way of knowing what the next code is going to be. The wonderful world of "Digital encryption"... The disable feature you mention is great if you got a second key but don't have another driver. You can put it in the safe at home, plus It saves the FOB battery from unnecessary drain. Thanks, Les, for the tip.
Surveyor1953 Posted January 4, 2024 Posted January 4, 2024 Glad to share the information and I hope it’s useful to others. 1
BarryMD Posted January 12 Posted January 12 New 2025 Lexus RX350h owner here ... Can an electronic valet key be used in a relay attack by a car thief? If so, are there any suggestions to minimize the possiblity of such an attack (or similar nefarious use with that key? Puting the key in a Faraday pouch to block the key from a thief or putting it into battery-saving mode -- if that's even possible --with such a key as Surveyor1953 suggests is not very practical since the valet needs to use the key (e.g., at a car detail or tire shop).
Les Lex 2018 Posted January 12 Posted January 12 Gemini / Bard AI states that: Lexus has implemented several measures to enhance the security of its key fobs and mitigate the risk of relay attacks. Here are some of the key strategies: Improved Key Fob Technology: Motion Sensors: Newer Lexus models incorporate motion sensors in their key fobs. These sensors activate a low-power mode when the key fob is stationary, significantly reducing the signal's range and making it harder for thieves to intercept. Ultra-Wideband (UWB) Technology: Some Lexus models utilize UWB technology for enhanced security.UWB operates on a different frequency than traditional key fob signals, making it more difficult for relay devices to intercept and amplify. UWB also provides more precise location data, further enhancing security. Ongoing Security Updates: Lexus continuously monitors emerging threats and updates its vehicle systems with software patches to address potential vulnerabilities, including those related to relay attacks. Collaboration: Lexus collaborates with industry partners and security experts to develop and implement the latest security measures and best practices. Disclaimer: This information is for general knowledge and guidance only. It does not constitute professional security advice. END AI QUOTE So, Barry, knowing the fact that high-end thieves and Lexus are constantly trying to stay one step ahead of each other, your worry is some what well founded. I sold my steering wheel locking bar called the club and will never use one. They are clumsy. Since you can't keep your fob in a tin can all the time, that is like you say, not practical. Just my own feeling: you're much more likely to be car jacked than have your Lexus lifted in the middle of the night. They just walk up to you at a light pointing a gun at you and ask you to get out. Thinking you are an MD, you don't live in a high crime area. But you do drive thru high crime areas. When I'm out touring the city, I like to think of myself as a duck in a barrel. Hopefully, not a dead one. 1
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