ThE_0nE

Thank you so much for the answer @ColinBarber. In question nº3, I'm referring to traction (hybrid) battery and not 12v battery. The 12v battery is not that small, it's a 450A with 60Ah. On my old car I had the same battery capacity and I could easily stay 5h listening to radio while repairing my car. Do you know exactly what accessories use traction battery while parked with READY OFF? Like is the radio powers by traction battery? Seat heaters? etc... Because something is draining very quickly traction battery and it doesn't feel normal to me.

Hello all, So I bought my GS450h 2008 with 56k miles 1 month ago. Although it feels smooth and everything is working fine I still have a few concerns. 1. When I bought it I drove 400 km (250 miles) at 140 km/h (87 mph) and the average consumption was 9.5 l/100km (22 mpg). This consumption wasn't very alarmist, I was expecting this. But during city drive I see very big consumption. I think if I would drive very slowly (like a grandpa), the best I could get it is something around 15 l/100km (35 mpg). But I if have ocasional quick launch, consumption launches average to 20 l/100km. The consumption data I'm showing here is obtained from car computer. Could not be accurate at all. This is not my biggest concern, but I feel that ICE is being overused due to bad hybrid battery. 2. Each time I start my car (first time of the day) ICE kicks in. I do feel it can be normal since it is cold in my garage (8ºC). And maybe it is warming up the engine as part of normal procedure. 3. When I stay in the car for long periods of time with READY ON or READY OFF, only using radio, it discharges traction battery 1 bar in 10/15 min (rough estimate). With READY ON when it reaches 2 bars left (purple) ICE kicks in to charge until 3 bars. One time, I was with READY OFF, heat ventilator ON, radio ON, probably headlights ON and playing with Techstream software checking errors, checking live data, etc... Radio stopped working, and every light in the car started to change intensity from LOW to HIGH (blinking). I know it had 2 or less battery bars. When I tried to start the car I got warning light say to check something. I think it was related to steering power. And READY ON was not showing. After disconnecting 12V battery and connecting everything started to work again. I checked 12V battery health and it was like new. Any thoughts on this? Is it possible that it has nothing to do with the battery state but rather a parasitic battery drain? Because battery feels to hold up from night to day. 4. I'm bought Techstream (bought from Amazon) and it came with V13 and V15 software. Both of them work fine to check codes, live data and customize settings. But when checking live data for Hybrid Control I get error. A fatal error kept popping up and not allowing to go forward. Does anyone experienced this? For insurance I bought another cable from different seller. And I also bought Veepeak OBDCheck BLE to try using Dr. Prius / Dr. Hybrid. 5. When I was driving back home after purchase on highway I turned on Adaptive Cruise Control and several times it stopped working telling me to clean the sensor. I did stop several times and cleaned it. But occasionally error would appear and disappear by it self. Does it happen to anyone else? Car was dirty as it was sitting in garage pretty much all the time. Last year owner drove something like 1500 miles. 6. So I bought this car, the only maintenance information paper I have is regarding oil. It was changed by Lexus 1 year ago, 1500 miles ago. I checked all levels (oil, coolant and brake) all looks good. Oil color looks like new (my friend mechanic said the same thing). I'm sure that car was always services by Lexus as I called to the dealer and confirmed that. I also confirmed that on the Lexus website where I can see miles intervals and dates when the car was assisted but the only thing I can see if the services was minor or major. I went to my local Lexus dealer trying to obtain more history but they couldn't release that information. All I know that the car never changed traction battery and tires were changed last year. Having almost no information about the past. What maintenance would you recommend. Should I change oil and filters even though it wasn't driven much? Should I change brake fluid? Coolant? Filters? Spark plugs? 7. Service manual never refers about fuel filter change. Does it even exist? Does it require change? 8. Dashboard rattling noise. I already saw some possible fixes, but does anyone related to this? This will be it for now. I appreciate any help or suggestions. Cheers!

Hello everyone, I'm a new user to this forum, I'm a new user of Lexus community, I have read a lot of threads in this forum and I'm really enjoying to be here. Just a quick background, my first and only car (before Lexus) was Skoda Octavia 1.6 sedan (gasoline) from 1999 and owned it close to 5 years. Throughout those years I have learned a lot about mechanics and a started to do the maintenance my self. Since the first day I bought it (rushed decision) I was always worried and fixing something. Either it was a blown headgasket, old shockers, electrical problemas, locking mechanism (damn those VW mechanisms) and so on. For the past year I was done with always worrying about something in the car. It practically became Saturday routine to fix something. This brings me to Lexus. I have read so much about the Lexus. About making very luxurious and reliable cars. I started to look after IS250 from 2008 (due to low budget 12k€), described as a very fun, agile and reliable car (except direct injection system). Unfortunately I live in Portugal and used cars are very expensive and not a lot of them (specially Lexus). In total there are 30 used Lexus currently selling in Portugal under 12k€ Then, there were no more IS250 selling during 2 months, so I started to look after different Lexus models. For my budget I could only find RX400h, IS220d (diesel), IS200, RX300 and that is it. And then, I found GS450h. Although I was looking for something more sporty and with bigger boot, I got very excited by the power it can deliver and luxury put inside it. It was a risky decision for me to buy it since it was located 400km away from me. The car condition on the photos and 65k miles on it got me VERY interested. For that price I couldn't get anything better regarding comfort, power, luxury and condition. The only thing scaring me of buying that car on the same day was the age due to hybrid battery. Car had 12 years and apparently it never changed the battery. Originally this car cost 60k€ and I managed to buy it for little over 10k€. Fortunately for me the risk has paid off (in my opinion). Car barely had any scratches, had 1 owner who barely drove it (average of 5k miles per year, checked with Lexus dealer), always assisted at Lexus and great condition overall. And after his death his wife didn't need the car so she asked nearest used car dealer to sell the car. Although hybrid battery will require a soon replacement/reconditioning for sure. When I was using Techstream software (with READY ON and radio ON), hybrid battery was discharging 1 bar per 10 min. Reaching only 2 bars left (purple) ICE would kick-in to charge the battery. Anyway, with luck I might need only to replace some battery modules (40$ each) or even if I replace the whole battery (1600$ total) I still think this car is worth it. Fun, elegant and very low maintenance. It's weird for me that car doesn't need to change anything like a regular car like a driving belt. The only thing I see in maintenance manual to replace is: oil filter, oil. Occasionally change air filter, clean air conditioner filter. And very rare (spark plugs and coolant). I still don't believe it. Oh and I bet the breaks are still original, since the car uses regenerative braking. I checked them, still within the limits, probably only in 1-2 years I will see the brake pad warning light. Please don't take this literally, I do know the car still requires maintenance, but damn, it is so less than I'm used to. Another big deal factor that got me into Lexus is the maintenance. Usually who buy a Lexus (at least in Portugal) has the money to pay for the maintenance. And if they have the money to pay for it, they won't go to local sketchy mechanics, specially if there is a problem Hybrid system. And in Lexus if there is a tiny issue, all the warning lights will come on and will bug you until you fix it. That is very good if you are buying a used Lexus and very bad if you are trying to sell a broken Lexus. And it's not easy to camouflage issues. For example, when I bought the car it had a TPMS warning light. I knew it wasn't a big deal and it even helped to negotiate the price (car dealer had no idea what that warning meant). Anyhow, I'm very happy to be part of this community and I'll try to contribute with what I know and learn throughout the way. Cheers!