reset after battery replacement

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Jan 27, 2021 | 12:41 PM

#16

Cecelia

Driver School Candidate

Joined: Jan 2021

Posts: 1

Likes: 0

From: California

How to reset the computer I guess after replacing a battery a dead battery

Quote:

Originally Posted by Trav80015

If I replace my battery can I also reset the computer or do I have to take it to dealer

and my battery died I replaced it with a new one and now everything lights up it's got full power but the car will not start what do I need to do

Jan 27, 2021 | 01:26 PM

#17

Clutchless

CL Community Team

Joined: May 2005

Posts: 7,182

Likes: 1,722

From: VA

How do you know it has full power if it will not start? Did you clean off the battery cables?
Does the starter crank the engine? Have you checked the voltage on the new battery? Maybe you should return it for another one.
I have seen new batteries that needed a full day of charging before they could be used.

Jan 27, 2021 | 01:42 PM

#18

Non

Intermediate

Joined: Dec 2018

Posts: 378

Likes: 53

From: Indiana

Quote:

Originally Posted by Cecelia

and my battery died I replaced it with a new one and now everything lights up it's got full power but the car will not start what do I need to do

This is what you need to do, according to your manual:

easy peasy

Nov 21, 2022 | 10:37 AM

#19

unebonnevi

Pit Crew

Joined: Nov 2018

Posts: 181

Likes: 36

From: CA

I have just replaced my 2007 Lexus RX350 12V battery with a new one. I have done all the resets I know, windows rolling up and down, etc. Is there anything I need to do for AC/heat system? I have noticed now my hot air is NOT hot at all, just barely warm even when I set the temperature to 70 via the CLIMATE menu. I also ran the AC/system diagnostic by holding the AUTO and CABIN-RECYCLED-AIR buttons together to and turn on the car. It's all GOOD, as the flashing code is shown as zero, but hot air is not hot at all.

Thanks for any tip!

Nov 21, 2022 | 10:42 AM

#20

Non

Intermediate

Joined: Dec 2018

Posts: 378

Likes: 53

From: Indiana

Quote:

Originally Posted by unebonnevi

The first thing to do is check the coolant level in the reservoir tank and in the radiator itself. If that's low, you will have no heat

Nov 21, 2022 | 01:21 PM

#21

Clutchless

CL Community Team

Joined: May 2005

Posts: 7,182

Likes: 1,722

From: VA

2007 is a second generation RX and you should post your request in the proper forum in order to get more responsive answers for that particular model. I will not move this (although another moderator may) because Non provided a useful response that may help you. However your 2007 may have different issues than the 3rd Generation which is 2010 - 2015.

Nov 21, 2022 | 02:11 PM

#22

unebonnevi

Pit Crew

Joined: Nov 2018

Posts: 181

Likes: 36

From: CA

Quote:

Originally Posted by Non

The first thing to do is check the coolant level in the reservoir tank and in the radiator itself. If that's low, you will have no heat

Thanks! Apologies. I thought this was the thread for RX 2nd generation.

Sep 24, 2025 | 01:38 AM

#23

cadync04

1st Gear

Joined: Sep 2025

Posts: 1

Likes: 0

Quote:

Originally Posted by kezgao

I didn't lose anything. Memory seat, radio presets.. etc.. nothing was reset when I replaced my battery. The battery was probably disconnected for 10 minutes?
I do have Navigation, not sure if the settings might be saved on the HDD? No idea how non-navs work.

weird, my whole chip needed to reset after disconnecting