Toyota / Lexus Rough Idle After Battery Change/Disconnect - Idle Reset Relearn Procedure

Quick & Easy steps to fix your car's rough idle problem. When you disconnect or replace your car battery the car will probably idle rough. You need to put your car in Idle Relearn / Reset Mode to reset your car's computer idle fuel mix. This is a very easy process with great results. No tools needed. You may also have to do this when you work on the car's throttle body or alternator.
In this video you will see the drastic change this procedure made on a Toyota Camry and it should also work on your Toyota, Lexus, Scion and other similar models.

*If this video was a help to you give it a "thumbs up". If you have not already done so, please consider subscribing to this channel.

Disclaimer:
Although I have been following these procedures for many years; I assume no liability for any damage that may occur to any person or property as a result of the information provided in this video. I take necessary precautions (that I am aware of) when working on these projects but that in no way implies or creates any expressed or implied warranty or guarantee of any kind of particular result. Any injury, damage or loss of any kind to anyone or their property or anything related to information in this video is the sole responsibility of the user and not Helping U Online (this video).

#ToyotaIdleRelearnProcedure
#ToyotaIdleResetProcedure
#FixRoughIdleToyotaAfterBatteryChange

[chazezra]

After cleaning the MAF and throttle body car was idling high and check engine light came on; car was running REALLY rough. I tried this then my car would not start. Waited a few minutes then it started and now runs great. My car has 224, 000+ miles and is much needed for traveling to medical appointments. I cannot tell you how grateful I am. Thank you VERY much. 😊

[davidt.]

Best video ever. Just replaced my battery and was idling at 250. And within 30 sec. It started picking up idle quickly and settled after 3 min. Thank you . 2023!!

[nevetsrellim]

I replaced the battery on my 2003 Camry which I’ve done several times before but this time my vehicle had all the symptoms of this video. I had an auto parts store check my alternator and they told me I needed a new alternator. Anyhow I found your video and I followed all the steps and now it runs perfectly! (No new alternator needed) Thank you for posting.

[markthomas]

You never know if you tube has a solution to your problems unless you look, sure enough someone shared their knowledge thank you so much.

[emilyn]

Have an 01 camry with almost 295, 000 miles. Got a new battery & thought our car had finally kicked the bucket. You are a LIFESAVER & fixed the issue. Thanks for the video

[chrisyongchu]

This guy is still a legend in 2022! Thank you. I was afraid I had some other real serious issues. Had the alternator replaced recently and that’s when the low idle started. God bless you for sharing this knowledge.

[bolsbolbol]

This really worked! I've changed the battery in my car several times over the years but this is the first time I've had it idle low after. Cheers!!!

[JorgeVillatoroOfficial]

I’m forever in debt to you. This was just want I needed. Fixed my 98 rolla. I love my rolla. ❤

[JiltedValkyrie]

YouTube literally makes modern car DIY possible. THANK YOU!

[nolodescartes]

I've had this problem on my Corolla every time I changed the battery or disconnected the terminals. I changed my battery yesterday and had the problem come back again and the fix in this video worked. Always thought it had something to do with the computer losing its mapping data due to the reset. Thanks!

[maiscest]

thank you so much for the video! i had my battery replaced today at the mechanic's and i as was driving home it died. after panicking for 15 minutes, i found your video. 7 minutes later, i was on my way home. :)

[joshalfaro]

Holy crap this actually worked. I have a 2009 toyota matrix 1.8L. Had very rough idle when warm. Idled about 500rpm and after doing this it now idles about 700rpm and is very smooth. Thank much!

[fmello]

This saved my Camry! I was so worried that something more serious was going on but I was sure it couldn't be intake control valve or throttle body, or wiring since all I did was disconnect the black battery terminal to do work on my car the day before. Now I know for the future. Many thanks!

[patriotswitch]

Spent a grand on a new ac compressor and drove it put of the mechanics, stalled on me, thought it was going to be another grand but VOILA!!! Brilliant bro, thank you!!

[paulmiles]

It also works for the reverse situation. Cleaned the 250, 000 mile throttlle body after changing the plugs. Come to find out, they were the original ngk plugs. Anyhow, i got it all back together to find it now idling at 2000 rpm. Unpluged the neg. Battery terminal for 30 min. Per a different video. Brought the idle down to 1100. Found this video did the thing for 7 min. And all better. Thanks a million. (2006 3.3 Highlander)

[alanwatts]

Not gonna lie .. I panic like a baby ... thank you so much... .. I sell cars and the guy is picking up the car tonight but battery was dead.. omg you save my day .. my car runs great now

[Joseph-mini_tv]

I will try this technique. I've just changed my battery and has idle problem. Thanks for sharing ur knowledge. ❤

[justinhardenbrook]

This video is amazing! I disconnected my battery due to changing a valve cover gasket. Barely wanted to stay running. After following these instructions, my car is running great!

[abdullahalsalim]

All auto parts stores said the alternator failed, but I just replaced it before I went to them. You got the exact issue, thank you so much buddy.

[akapurvis]

This worked for my 2005 Camry. Before it would idle high intermittently when I stopped at a stop sign after a cold start. Thanks a bunch.👌🏿