Clock slow in 2005 highlander

Disconnect the battery ground for a couple of days.It will reset once you hook it back up.Otherwise,unplug the alarm from the system.

Immobiliser ?
Try this thread it may help - http://www.helpowl.com/a/Toyota/2008-Highlander/Research/5115?search=2008%20toyota%20highlander%20vsc%20check%20engine%20light

1 amp over an extended period (like overnight) is an excessive draw, and would drain the battery in a few days. What happens after the one minute? Does it continue to draw, or is that as long as you checked it?
If fuse F7 is the ignition off draw (IOD), then you are on the right track. The IOD serves to feed the computer's keep alive memory, the radio presets, the clock, and the alarm system. But the draw is measured in milli-amps. About 200 milli-amps or less is normal (and that is 0.2 amps), and that would not drain the battery in such a short time.
I would have a shop check this out with an ammeter and a device called a Shunt Bar. Ask for a battery drain test, or an off-draw test; well, explain your problem and have them check for too much current being used when everything is shut off.
Good luck.

Better check the battery as it sure sounds like its dead. The charging system could be at fault also A brand new battery can run down and need a charge if the charging system isnt doing its job Hope this helps you .Good luck!

its not a problem all cars all batteries do that if they sit after couple day min especailly long period of time you will always need a jump to get those cells in battery alive and active once car starts its good should have no problems

check interior grounds but i believe the clock is going out

You can reset the TPMS system on your Toyota Highlander. There are instructions in the owner's manual on how to do so. However, resetting the system without checking the cold-air inflation of the tires is not necessarily solving the problem. The recommended tire pressure inflation sticker is located on the driver-side door frame. On the Highlander, it calls for 30 pounds per square inch (psi) of tire pressure per tire, including the full-sized spare. If the Highlander had a donut spare tire, it will not have a TPMS sensor and subsequently will not effect the TPMS system one way or the other. To reset the TPMS system in the Highlander, there is a reset button under the driver-side dashboard that needs to be held for a period of time (a few seconds) while the ignition key is in the "key-on/engine-off" mode. The TPMS warning light will blink rapidly for a few more seconds, and the system will reset itself. Refer to the manual for the exact procedure. If the TPMS warning light reoccurs, have the system or tires checked by a professional. Good luck and hope this helps, keep me posted. Be glad to help.

there is a short in the car's electrical system drawing power from the battery, causing an interuption in the power (hence the clock resetting) and killing the battery. An experienced electrician should be consulted

Have you checked any fuses? Does the climate control light up? If not then in the under hood fuse box (left of drivers side) check the ECU-B fuse should be 7.5 amp. Check the heater fuse in the fuse box inside the car it should be 15 amp. If the fuses are OK and only the clock is bad check out my site www.autoclockrepair.com I offer a repair service.

The alternator test will likely indicate a charging problem from the alternator that is not keeping the battery charged up.
Regardless of the alternator test, it would be best to do an electrical draw test to determine whether there is an excess drain on the battery. This can be done with an ammeter between the positive terminal and the positive battery post. This test is done with key off, all accessories off, no lights on, etc. There will be a small draw on the battery in all newer vehicles, but it should be in the order of up to 50 milliamps. If you are getting more than 200 milliamps of current draw then there is a problem with an electrical system that will drain the battery over a period of days or weeks. Once you know this is true, the electrical systems can be methodically tested.