Skib Posted February 17, 2017 Share Posted February 17, 2017 My car is250 2008 is completely dead. The light on interior is normal but the start button never turn green (red only). I tried to pump the brake many times but it still doesn't work. I also replaced a new battery. what should I do? Thanks in advance! Quote Link to comment Share on other sites More sharing options...
TrevC Posted February 20, 2017 Share Posted February 20, 2017 Hi Skib...welcome to the Forum You could see if the stop lamps are working e.g. the brake light switch is actually working as if this was faulty it be the reason the system is not recognising it and therefore not starting? Just an idea but worth checking first, let us know how you get on with it. Cheers Trevor Quote Link to comment Share on other sites More sharing options...
Skib Posted February 20, 2017 Author Share Posted February 20, 2017 Hi Trevor, I already checked the rear stop light and it didn't light up when I stepped on the brake. I also checked the brake switch and it seems ok. Quote Link to comment Share on other sites More sharing options...
TrevC Posted February 22, 2017 Share Posted February 22, 2017 Some manufacturers fit two switches on the brake pedal (not sure if it is the case with Lexus) but worth checking to see it that is the case. Quote Link to comment Share on other sites More sharing options...
Skib Posted February 22, 2017 Author Share Posted February 22, 2017 I'll try to check it. I forgot to let you know that I removed th battery to fully charged then when I put it back, it won't crank or start. Should it be the main problem? Quote Link to comment Share on other sites More sharing options...
TrevC Posted February 28, 2017 Share Posted February 28, 2017 Sounds like the primary cause...battery connections? Quote Link to comment Share on other sites More sharing options...
Skib Posted February 28, 2017 Author Share Posted February 28, 2017 No, the battery connection is good. The interior light comes on but when there is no brake light when I step on the brake. I also check all the fuse and it is ok. Quote Link to comment Share on other sites More sharing options...
bazzle Posted March 21, 2017 Share Posted March 21, 2017 Interior light draws little current. Can you turn on headlights or heater fan? Quote Link to comment Share on other sites More sharing options...
Skib Posted March 21, 2017 Author Share Posted March 21, 2017 2 hours ago, bazzle said: Interior light draws little current. Can you turn on headlights or heater fan? No. Is it because I removed the doors without discounected the battery? Is it because of the BCM? Quote Link to comment Share on other sites More sharing options...
bazzle Posted March 22, 2017 Share Posted March 22, 2017 Battery may not have enough voltage for higher watts. Put a voltmeter on battery and try what you have been doing and record voltage. Quote Link to comment Share on other sites More sharing options...
Skib Posted March 22, 2017 Author Share Posted March 22, 2017 23 hours ago, bazzle said: 11 hours ago, bazzle said: Battery may not have enough voltage for higher watts. Put a voltmeter on battery and try what you have been doing and record voltage. I fully charged it and still doesn't work. Quote Link to comment Share on other sites More sharing options...
bazzle Posted March 22, 2017 Share Posted March 22, 2017 Why did you remove the doors? Has it had an accident ? (If so accelerometer, srs etc may all need resetting, changing) Quote Link to comment Share on other sites More sharing options...
Skib Posted March 22, 2017 Author Share Posted March 22, 2017 Yes. It got in accident but it started normally until I replaced the doors. Quote Link to comment Share on other sites More sharing options...
Lexus_DK Posted March 23, 2017 Share Posted March 23, 2017 Does it detect your key fob at least? Try hovering the key fob directly over the start button without pressing anything and see if it turns green. Quote Link to comment Share on other sites More sharing options...
Skib Posted March 23, 2017 Author Share Posted March 23, 2017 I didn't try but it never turn green. Quote Link to comment Share on other sites More sharing options...
Lexus_DK Posted March 23, 2017 Share Posted March 23, 2017 At this point, just tow the vehicle to a reputable Lexus dealership. Your better off having a Lexus technician just diagnose it, they can give you a better understanding with a health check/data. You probably have a bad brake switch, possibly corrosion in one of the wires, maybe a bad ground or a bad ecu. Does the vehicle at least detect the key? Try unlocking/locking with key fob. Then do what said in previous post. Quote Link to comment Share on other sites More sharing options...
Kal969 Posted September 6, 2023 Share Posted September 6, 2023 I’m having the exact same issue with my 2008 Lexus is250 please let me know if you have ever found out what the problem was or if you found a solution!!!!! please and thank you!!!!! Quote Link to comment Share on other sites More sharing options...
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