My 2003 will not start, the starter relay clicks, something under the intake manifold clicks, but it will not start. The battery is fully charged. It did this last year, had it towed to shop and it cranked right up. The mechanic is mystified. I'm a 1000 miles from home.

It's pretty hard to tell without knowing what kind of vehicle you have, but common things to check would be is the battery fully charged? Is the cables free of corrosion and tight? Is the starter good? The clicking could be a starter relay or solenoid engaging as it should, but something is preventing the voltage from getting to the starter, or there is an issue with the starter itself.

Find the starter relay in the under hood fuse block. Make sure the vehicle is in park then remove the starter relay and locate cavity #30 and #87 use a short wire to touch these terminals together for a second if the vehicle starts replace the relay.

Check the starter, check the cable that goes from the battery to the starter. make sure its tight and not loose. take a hammer and tap on the starter. If the vehicle still doesn't start. Change the starter.

1. Make sure your battery is fully charged.
2. Check connections from battery to starter relay.
3. Make sure you have voltage going to the start side (small wire) of the relay with the key in the "start" position.
4. If you don't have voltage going to the start side of the relay (small wire) with key in the start positon, then your starter switch is faulty (under dash usually mounted on top of steering column).
5. If you have voltage to the start side of the relay (small wire) with key in start position, and it don't click when trying to start your car, then the starter relay is bad.
6. If your starter relay clicks, but engine don't turn over, then the starter is faulty.

1. Make sure your battery is fully charged.
2. Check connections from battery to starter relay.
3. Make sure you have voltage going to the start side (small wire) of the relay with the key in the "start" position.
4. If you don't have voltage going to the start side of the relay (small wire) with key in the start positon, then your starter switch is faulty (under dash usually mounted on top of steering column).
5. If you have voltage to the start side of the relay (small wire) with key in start position, and it don't click when trying to start your car, then the starter relay is bad.
6. If your starter relay clicks, but engine don't turn over, then the starter is faulty.

1. Make sure your battery is fully charged.
2. Check connections from battery to starter relay.
3. Make sure you have voltage going to the start side (small wire) of the relay with the key in the "start" position.
4. If you don't have voltage going to the start side of the relay (small wire) with key in the start positon, then your starter switch is faulty (under dash usually mounted on top of steering column).
5. If you have voltage to the start side of the relay (small wire) with key in start position, and it don't click when trying to start your car, then the starter relay is bad.
6. If your starter relay clicks, but engine don't turn over, then the starter is faulty.

could be starter relay in fuse box under hood

If motor was seized, there would be a big power drained when trying to start it, check make sure battery is fully charge, and have good battery terminals connection's, starter labor flag time is 2.4 hrs.

The starter relay is on the drivers side of the engine compartment behind the air filter housing under the fuse box cover

seperate problems. you starter is under intake manifold and is most likly the problem and the dash lights go bad on older lexus ls400's.would have to be replaced.