NO START ISSUE - 100 Series 2000 LX470 (1 Viewer)

[Booshman]

Hi All,

I have the issue that has been pretty well described in this thread.. ( have 2000 LC100)

I put the key in, all dash lights come on... but as soon as I crank, all electrics get cut off. engine never turns over. not even a little.

- 2 new batteries have been tried. although battery was ruled out positively before anyway.
- it take a couple of minutes for things to reset, before I can put the key again and dash lights will come on. if I immediately try again, all electric would remain dead for a min or two.
- this can happen even after driving the car for hours or hundreds of miles on a trip. I could turn it off to fill up gas, and then no start.
- has been happening for over a year. (answer below, if you wonder, how I've been managing!)
- rarely it starts again after waiting a few minutes and trying again.
- I can consistently get it to start, -- ready?! by disconnecting the battery negative and reconnecting. this works every time. and then there is normal crank. which confirms strong battery(two different batteries have been tried.) and normally functioning starter.

I think there is some electrical thing, that when the first crank attempt fails, as there is no real crank, it is capable to cut entire electrical system of the car off. and this can be easily reset by reconnecting negative terminal!

what do you guys think?

lots of people reported this problem. what is the root cause?

Thanks,

Hello! Did this ever get resolved? I'm experiencing the exact same issue.

 

[teezlr]

Hello! Did this ever get resolved? I'm experiencing the exact same issue.

Same

 

[suprarx7nut]

Dealing with this same thing myself. Reman Toyota starter with only 30k miles and 3 years since install. I opted to replace the starter as a preventative maintenance item to prevent exactly this circumstance.

Seems like a starter contact issue.

I had a no start a few months ago this summer. Disconnected battery, reconnected after a thorough charge and it cranked successfully so I thought it might be the battery. Charged the battery a few times now and no dice.

Verified that there's no voltage drop from terminals on battery to the leads coming off them.
Verified that battery voltage remains over 12.0V during crank.
Can hear the starter solenoid throw during crank, but no rotation is heard. Can also hear the starter relay click in the fuse box. No repeated click that would indicate the starter is attempting to rotate. Just the one click for the throw and the other return thud at the end of the Lexus crank cycle.

I'm running a "reconditioning" routine on the battery now, but I'm not confident that will do anything (CTEK 25 amp charger).

 

[teezlr]

Dealing with this same thing myself. Reman Toyota starter with only 30k miles and 3 years since install. I opted to replace the starter as a preventative maintenance item to prevent exactly this circumstance.

Seems like a starter contact issue.

I had a no start a few months ago this summer. Disconnected battery, reconnected after a thorough charge and it cranked successfully so I thought it might be the battery. Charged the battery a few times now and no dice.

Verified that there's no voltage drop from terminals on battery to the leads coming off them.
Verified that battery voltage remains over 12.0V during crank.
Can hear the starter solenoid throw during crank, but no rotation is heard. Can also hear the starter relay click in the fuse box. No repeated click that would indicate the starter is attempting to rotate. Just the one click for the throw and the other return thud at the end of the Lexus crank cycle.

I'm running a "reconditioning" routine on the battery now, but I'm not confident that will do anything (CTEK 25 amp charger).

Did you try this yet

Click But Won't Start Issue Fixed (It's Not Your Starter!) Toyota Land Cruiser, Sequoia, Tundra

 

[suprarx7nut]

Did you try this yet

Click But Won't Start Issue Fixed (It's Not Your Starter!) Toyota Land Cruiser, Sequoia, Tundra

Thanks. I pulled the relay (annoyingly hard to do actually - I had to use a hook pic tool to break it free). I did a quick test just now with a freshly reconditioned battery and re-installed starter relay. No change. Still just clicks once.

I'll try to jumper it next chance I get. It's not my DD, so no rush thankfully.

 

[2001LC]

Thanks. I pulled the relay (annoyingly hard to do actually - I had to use a hook pic tool to break it free). I did a quick test just now with a freshly reconditioned battery and re-installed starter relay. No change. Still just clicks once.

I'll try to jumper it next chance I get. It's not my DD, so no rush thankfully.

Andy, If you're see 12.5v or better before trying to start, and hearing a click as you try starter. You're likely getting some dimming of dash lights at same time as you turn key to start? Unfortunately we take our best shot, based on the clues. Which these clues and your other statements, add up to your starter is bad.

One thing I do when installing Denso or Toyota Denso (reman to higher standard) remanufactured starter. I reset the contacts. I was given a heads-up on this a few years ago, by a master Toyota tech. He said he hates remans. As to often the rebuilder, does not properly set contacts. Which results in redoing the job. A real PITA when its a 4.7L!

You have a 4/7L VVT. As I recall, no S.A.I. system block off?
Installing an easily replaceable S.A.I pump filter, is a very good idea for health of CAT's & engine. Which just as starter replacement, requires removing intake manifold.

If you like, I'll get you in my shop in the next week or two. Just text, email or call me!

 

[suprarx7nut]

Andy, If you're see 12.5v or better before trying to start, and hearing a click as you try starter. You're likely getting some dimming of dash lights at same time as you turn key to start? Unfortunately we take our best shot, based on the clues. Which these clues and your other statements, add up to your starter is bad.

One thing I do when installing Denso or Toyota Denso (reman to higher standard) remanufactured starter. I reset the contacts. I was given a heads-up on this a few years ago, by a master Toyota tech. He said he hates remans. As to often the rebuilder, does not properly set contacts. Which results in redoing the job. A real PITA when its a 4.7L!

You have a 4/7L VVT. As I recall, no S.A.I. system block off?
Installing an easily replaceable S.A.I pump filter, is a very good idea for health of CAT's & engine. Which just as starter replacement, requires removing intake manifold.

If you like, I'll get you in my shop in the next week or two. Just text, email or call me!

Yeah, agreed the contacts seem the most likely culprit now. I have the factory air intake thing as of now. I'll see how it plays out here. It'll be a significant annoyance to get it trailered to you, work on it in my driveway, or get it muscled into my garage. Since it's the 3rd family car right now, my inclination is to do nothing for the moment, haha.

On the bright side, the winch might come in handy to move it around. Winch for trails? Pssh, I use mine in my driveway!