Problems After Battery Replacement

[debinsc]

I have a 2007 460L. I had the battery replaced and now I can't set the seat memory. I read of one solution, but I haven't tried it yet. My daughter has the car right now. Another problem is with the heater. The ac works fine but the heater blows cold. Thanks for any help.

[pj8708]

I have a 2007 460L. I had the battery replaced and now I can't set the seat memory. I read of one solution, but I haven't tried it yet. My daughter has the car right now. Another problem is with the heater. The ac works fine but the heater blows cold. Thanks for any help.

One simple but often fix for the seat memory issue: The seat memory won't work if you accidently have your foot on the brake while your doing the process. Check your owners manual.

As for the heater, There is a fuse for the air conditioning system. (In my ES350, it is a 50amp). This fuse is for the complete system as far as I can tell. This includes the heat and cool sides and the mixing motor. It is possible that when the new battery was installed there was a brief short that took out that fuse. This is mere speculation on my part as diagnosing via long distance is not an exact science.For example, if the A/C is blowing cold the fuse may be fine.

Check this out and someone else will chime in here as well.

[1990LS400]

Here is information from page 579 of your owners manual:

When "Electrical equipment operation is limited" is shown:

This message indicates that the battery is low. When the message is shown, operation

of electrical equipment that uses a large amount of electric power, such as the

air conditioning system, may be limited temporarily. This does not indicate a malfunction.

Operation of electrical equipment will be restored after the battery is

charged.

Is the "limited" message displayed?

[debinsc]

I have a 2007 460L. I had the battery replaced and now I can't set the seat memory. I read of one solution, but I haven't tried it yet. My daughter has the car right now. Another problem is with the heater. The ac works fine but the heater blows cold. Thanks for any help.

One simple but often fix for the seat memory issue: The seat memory won't work if you accidently have your foot on the brake while your doing the process. Check your owners manual.

As for the heater, There is a fuse for the air conditioning system. (In my ES350, it is a 50amp). This fuse is for the complete system as far as I can tell. This includes the heat and cool sides and the mixing motor. It is possible that when the new battery was installed there was a brief short that took out that fuse. This is mere speculation on my part as diagnosing via long distance is not an exact science.For example, if the A/C is blowing cold the fuse may be fine.

Check this out and someone else will chime in here as well.

[DEATH]

I have a 2007 460L. I had the battery replaced and now I can't set the seat memory. I read of one solution, but I haven't tried it yet. My daughter has the car right now. Another problem is with the heater. The ac works fine but the heater blows cold. Thanks for any help.

Disconnecting the battery erases seat memory. You may need to reinitialize the seat by sliding it to the fully forward position until you hear a slight 'beep'. Do the same with the forward recline position. You should then be able to reset seat/mirror/steering column position as usual. Same goes for climate control servo positions except you need the tech-stream (you don't have one)to do that.

[dcox5]

2007 Lexus LS 460L Reinitializing Seat Position Memory (Detailed Steps)

Occasionally when the battery has been disconnected, the Seat Position Memory becomes non-functional. It does nothing, not even beep. In addition, if you use the manual controls to move the seat or the seat back, you may hear repeated beeps. These are indicators that the seat position memory is lost and needs to be reinitialized. Here is a procedure that reinitializes the 2007 LS 460L and most likely will reinitialize this feature on other Lexus years and models as well.

1. Standing outside the driver’s door, open the door and using the long manual forward and back seat switch, move the whole seat fully forward until it stops.
2. Now using the same seat control, move the whole seat fully to the back until it stops. You may hear repeated beeps during this motion.
3. Now use the seat back tilt control to lay the seat back fully down toward the rear seat. Again, you may hear repeated beeps. Continue laying it back until it stops.
4. Using the same tilt control, now tilt the seat back fully upright until it stops.
5. At this point, the seat position memory should be reset as it has counted the rotations of each of the associated seat motors and now knows the seat’s actual location.
6. Get in the car, close the door and start the car. Leave the car in Park and remove your foot from the brake..
7. Using the appropriate manual seat controls, move the seat to your most comfortable location and preferred degree of seat back tilt. At this time, you may also set your outside mirrors and telescoping steering wheel position using their controls.
8. Once you are satisfied with all the positions, press and hold the Set Button on the driver’s door and then press the appropriate L1, L2, or L3 Memory Button. Continue holding both the Set Button and the selected L1, L2 or L3 Memory Button until you hear a single beep. The present seat location and position are now programmed into the corresponding Seat Position Memory. The fact that you heard a beep confirms that the Seat Position Memory has been reinitialized and is now capable of capturing your preferred settings.
9. You can test your memory settings by using the manual controls to move the seat anywhere away from your ideal position and then press the appropriate L1, L2 or L3 Memory selection. The seat should return to your programmed setting.
10. You may now set the remaining seat memory positions starting with step 6 above.