Q&A: Will disconnecting the car's battery reset the computer? (2023)

news

Q. Does disconnecting the car’s battery overnight reset the the car’s computer, therefore readjusting its performance the next time you drive it?

Q&A: Will disconnecting the car's battery reset the computer? (1)

14:4213 January 2011

(Video) Doing This Will Reset Your Car and Fix It for Free

Q&A: Will disconnecting the car's battery reset the computer? (3)
(Video) How to Reset Your Car’s Computer, Old School Scotty Kilmer

For example, will taking off aggressively give it more bottom-end power, etc?

Peter

A. It depends on the car's age and type of ECU used. On some older cars, disconnecting the battery will reset the system but in most new cars it does nothing, except potentially reset the clock and radio station presets.

If you take off aggressively in a modern car, the ECU will automatically adjust everything as best it can according to the conditions, including air temperature, engine temperature and fuel being used.

Some ECUs have "adaptive learn" features for auto transmissions. If they detect a pattern of aggressive driving they alter gear-shift points and can sharpen throttle responses.

Q&A: Will disconnecting the car's battery reset the computer? (4)Close

Q&A: Will disconnecting the car’s battery reset the computer?

Thumbnail ViewQ&A: Will disconnecting the car's battery reset the computer? (5)

(Video) How To Reboot Your Car ~ Battery VooDoo

3 Images

Q&A: Will disconnecting the car's battery reset the computer? (6)
Q&A: Will disconnecting the car's battery reset the computer? (7)
Q&A: Will disconnecting the car's battery reset the computer? (8)
Q&A: Will disconnecting the car's battery reset the computer? (9)
Q&A: Will disconnecting the car's battery reset the computer? (10)
Q&A: Will disconnecting the car's battery reset the computer? (11)
(Video) Which battery terminal to disconnect first, connect first?
Q&A: Will disconnecting the car's battery reset the computer? (12)

Drive Team

Drive Team

Q&A: Will disconnecting the car's battery reset the computer? (13)Q&A: Will disconnecting the car's battery reset the computer? (14)Q&A: Will disconnecting the car's battery reset the computer? (15)

The Drive Team brings you trusted, expert reviews of your next new car and is home to the best new car awards program in Australia.

Read more about Drive TeamQ&A: Will disconnecting the car's battery reset the computer? (16)

Videos

1. This Stupid Thing Will Save You Thousands in Car Repairs
(Scotty Kilmer)
2. ❓ Will I Lose My Tune by Disconnecting the Battery? Haltech Q&A Episode 19
(Haltech)
3. Hyundai Disconnect Negative and Positive Battery Terminal Cables
(YOUCANIC)
4. Here's Why Your Car Battery Keeps Draining
(Everyman Driver)
5. Never Do This to Your Car (Learn from My Mistake)
(Scotty Kilmer)
6. Reset Mitsubishi Outlander PHEV BMU in 10 seconds! D-Easy Method!
(ElectricFuture)
Top Articles
Latest Posts
Article information

Author: Kelle Weber

Last Updated: 03/02/2023

Views: 5331

Rating: 4.2 / 5 (53 voted)

Reviews: 84% of readers found this page helpful

Author information

Name: Kelle Weber

Birthday: 2000-08-05

Address: 6796 Juan Square, Markfort, MN 58988

Phone: +8215934114615

Job: Hospitality Director

Hobby: tabletop games, Foreign language learning, Leather crafting, Horseback riding, Swimming, Knapping, Handball

Introduction: My name is Kelle Weber, I am a magnificent, enchanting, fair, joyous, light, determined, joyous person who loves writing and wants to share my knowledge and understanding with you.