LS460(L) Start-up Problem...Please Help
Pole Position
Joined: Aug 2012
Posts: 237
Likes: 10
From: Florida
what's the ethanol content in fuel over there. I"m going to guess that it's none. either way, high ethanol and/or other contaminants can cause rust in the fuel system and ridiculous problems with the fuel system
Driver School Candidate
Joined: Jun 2014
Posts: 3
Likes: 0
From: muscat
I have the same problem. .plz help me
Hello All,
My LS460 L (2008) is having startup problems. I press the startup button but doesn't always start and sometimes it takes three attempts to get started. I took it to the dealer in Saudi (ALJ) and they changed the battery and did a full check but couldn't figure the problem. The problem is intermittent.
Please see this video that I took to give you an idea and hopefully give me some pointers: http://db.tt/o3a1wHF3
Thanks in advance for your help.
My LS460 L (2008) is having startup problems. I press the startup button but doesn't always start and sometimes it takes three attempts to get started. I took it to the dealer in Saudi (ALJ) and they changed the battery and did a full check but couldn't figure the problem. The problem is intermittent.
Please see this video that I took to give you an idea and hopefully give me some pointers: http://db.tt/o3a1wHF3
Thanks in advance for your help.
Your cooperation is highly appreciated. .
Driver School Candidate
Joined: Jun 2014
Posts: 3
Likes: 0
From: muscat
Thanks for your post..
The professionals told me that the starter motor is defected and they have to replace it.
What do you think fellows: are they right?
Because I am afraid that they have to dismantle alot of parts to reach the motor and that's regardless the high cost of doing that!!!
Shall I let them do that? Or shall I let them do as posted in#19?!!
Plz help me out ..
The professionals told me that the starter motor is defected and they have to replace it.
What do you think fellows: are they right?
Because I am afraid that they have to dismantle alot of parts to reach the motor and that's regardless the high cost of doing that!!!
Shall I let them do that? Or shall I let them do as posted in#19?!!
Plz help me out ..
Pole Position
Joined: Oct 2012
Posts: 329
Likes: 7
From: wisconsin
If the symptoms are same - it is probably the fuel pump. I agree with Lextrician.. the fuel pump is probably not holding pressure. No need to change the injectors - because if injectors were bad - you will notice engine struggle even during idling and driving.
Last edited by lexus600hl; Jul 7, 2014 at 06:26 AM.
Pole Position
Joined: Oct 2012
Posts: 329
Likes: 7
From: wisconsin
On the battery drain issue - I had this type of problem 20 years ago with a 1995 lexus LS 400. At that time, I isolated it to a remote start, which was draining current.
You should check the drain current under standby conditions. - make sure everything is off. Remove negative terminal and put an ohm meter (a cheap multi meter should be fine) in series. If I remember correctly - after 20 years, the idle current in that car was about 30 milli amps.. Not sure of the number.. and that car did not have the electronics modern cars do. The dealer should know how to check idle current and what standard idle current should be.. and he has to try and trace it backwards.. with his computer..
You should check the drain current under standby conditions. - make sure everything is off. Remove negative terminal and put an ohm meter (a cheap multi meter should be fine) in series. If I remember correctly - after 20 years, the idle current in that car was about 30 milli amps.. Not sure of the number.. and that car did not have the electronics modern cars do. The dealer should know how to check idle current and what standard idle current should be.. and he has to try and trace it backwards.. with his computer..
Driver School Candidate
Joined: Aug 2017
Posts: 3
Likes: 0
From: CA
LS 460L Intermittent starting
I have a 2013 LS 460L. I purchased it on January 2014 and have the same problem. Occasionally it will take about 6 times to start the car. I took it to a dealer once but they couldn't duplicate the problem. Most of the times, I'll say about 98% of the time the car starts normally. Very frustrating.
Driver School Candidate
Joined: Mar 2018
Posts: 1
Likes: 0
From: Georgia
Hello, I am also experiencing some intermittent troubles with starting my 07 LS 460. After the car sat for an afternoon, I tried to start it and everything was dead. The next day I charged the battery and everything was fine. I assumed a light had been left on. Now it takes more than one try to start the vehicle. I checked the battery, and it is holding its charge at a steady 13 amps. I’m in GA, so cold is not the problem. I’m wondering if the start switch is going bad. Also, I remember the green light being illuminated while driving, but now there’s nothing. Any idea what the problem might be?
Driver School Candidate
Joined: Aug 2017
Posts: 3
Likes: 0
From: CA
I took my 2013 LS 460L to a Lexus dealer but unfortunately they couldn't figure it out since the problem is intermittent. I left it in another mechanics' shop for about a week until he duplicated the starting problem. He told me the problem was a bad sensor. The problem went away for about 3 months but it's been coming back occasionally though not quite often; may be once a month or so. Very frustrating when it happens.
Driver School Candidate
Joined: Oct 2019
Posts: 21
Likes: 3
From: La
Many Thanks for posting the link to the TSB 
. I didn’t have this problem when I bought the car back in 2008 and it only surfaced beginning of last year 2011. I will print the TSB and take it to the dealer. My car has only 56,000KM (31000 Miles) on it and it was always serviced at the dealer.
The fuel injectors have already been cleaned and the battery changed twice (end of June 2012 and on the first week of August 2012). I left on vacation and the car was in my garage for 30 days and when I returned the battery was totally drained. It didn’t make any sense that a new battery that has been just installed in June 2012 drains that quickly. I took it again to the dealer and the battery was changed again (warranty) on the first week of August 2012. The dealer maintenance engineer tells me that they have checked the car for any electrical issues but couldn’t find any.
I am totally puzzled and hopefully the TSB helps.
. I didn’t have this problem when I bought the car back in 2008 and it only surfaced beginning of last year 2011. I will print the TSB and take it to the dealer. My car has only 56,000KM (31000 Miles) on it and it was always serviced at the dealer.The fuel injectors have already been cleaned and the battery changed twice (end of June 2012 and on the first week of August 2012). I left on vacation and the car was in my garage for 30 days and when I returned the battery was totally drained. It didn’t make any sense that a new battery that has been just installed in June 2012 drains that quickly. I took it again to the dealer and the battery was changed again (warranty) on the first week of August 2012. The dealer maintenance engineer tells me that they have checked the car for any electrical issues but couldn’t find any.
I am totally puzzled and hopefully the TSB helps.
Moderator
Joined: Apr 2008
Posts: 2,220
Likes: 310
From: TX
Since you are short on things to consider, it causes me to wonder about your starting technique.
https://www.clublexus.com/forums/ls-...l#post10235528
https://www.clublexus.com/forums/ls-...l#post10235528