ECU reset

kfull · 08-13-2013, 06:55 PM

Anyone know what page of the manual this is on? I know all you do is unhook and re hook the negative terminal on the battery but I need to know what things I need to reset after that (windows auto up down etc)

SouthArk370Z · 08-13-2013, 07:05 PM

Not sure what page it's on - or if it's even in there. As far as I know, the window auto function and the radio presets are all that you need to worry about. And newer models don't require the window reset.

Edit: You can expedite the process by pressing on the brake pedal for a few seconds (or put some other load on the electrical system).

bacalhau1669 · 08-14-2013, 03:38 PM

I disconnected the battery on my 2013 while installing my intakes. I did not have to do anything afterwards. Just plugged the car back in and went off. It was unplugged for about 3 hours also. Perhaps I got lucky.

Otherwise, the DIY section of this forum probably has your answer. There's a lot of great threads there.

Elan · 08-14-2013, 04:37 PM

I believe disconnecting the negative terminal will reset it. Dunno if you have to wait a certain amount of time or not.

SouthArk370Z · 08-14-2013, 04:51 PM

Quote:

Originally Posted by Elan

I believe disconnecting the negative terminal will reset it. Dunno if you have to wait a certain amount of time or not.

Disconnecting either terminal will do it, but ... if you are removing the - side and short your wrench to any point but the + terminal, you're OK; if you ground out the + side, you can damage the electronics and battery (not to mention a nice shower of sparks). Electrically it doesn't matter - safety wise it does.

The ECU has something (probably a capacitor) that will maintain memory for a few seconds to minutes if all power is lost. Putting a load on the electrical system (eg, turning on the brake lights) will drain the reserve almost immediately and clear memory. You can accomplish the same thing with a 1 Megohm resistor, but it's a lot easier to just push the brake pedal for a few seconds.

cdoxp800 · 08-14-2013, 04:56 PM

ECU Resetting Procedures

Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON.
A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.

If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

kfull · 08-14-2013, 05:30 PM

Quote:

Originally Posted by cdoxp800

ECU Resetting Procedures

Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON.
A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.

If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

Yea I've seen that one, its like putting in a freaking cheat code for a video game

mag_black · 08-14-2013, 10:40 PM

I follow this
Easy Way to Reset ECU without battery disconnect in G37 - YouTube
Go w/ the video and it'll work every time.

eastwest2300 · 08-15-2013, 11:37 AM

Quote:

Originally Posted by kfull

Yea I've seen that one, its like putting in a freaking cheat code for a video game

martin82 · 08-15-2013, 11:38 AM

I bought a $20 obd2 reader lol

kfull · 08-15-2013, 01:17 PM

I might try to do this this weekend. Should it really make a difference in the the car if I have a few mods( CBE and k&n filters)? I haven't done anything with the CPU as far as resetting or a tune yet. I don't really need a tune anyways just having a CBE and the drop in filters.

martin82 · 08-15-2013, 01:55 PM

FYI pepboys will clear ur code, so will autozone for free (I know in CA they don't allow to rent the obd2 reader for free anymore) I think in ur state they still allow it.

Cbtech · 09-13-2013, 06:48 PM

Quote:

Originally Posted by martin82

FYI pepboys will clear ur code, so will autozone for free (I know in CA they don't allow to rent the obd2 reader for free anymore) I think in ur state they still allow it.

they make you buy it and then return it then they walk outside reset and go back in and refund your CC.

TexasChuck · 10-07-2013, 03:36 PM

I did the reset with an analog watch three times. The lights cleared and stayed off for a few seconds and came right back on. (I had installed the K&N cold air intakes. ) What next!!!!!!!
Chuck

neejv. · 07-23-2016, 12:40 AM

Quote:

Originally Posted by cdoxp800

ECU Resetting Procedures

Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON.
A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.

If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

just wondering, will this procedure clear/reset the way your car learn how you drive?

08-13-2013, 06:55 PM	#1 (permalink)
kfull Track Member Join Date: Mar 2012 Location: Massachusetts Posts: 909 Drives: A lot Rep Power: 14	ECU reset Anyone know what page of the manual this is on? I know all you do is unhook and re hook the negative terminal on the battery but I need to know what things I need to reset after that (windows auto up down etc) __________________ 2012 GM 6MT sports package \| FI non res cf exhaust \| K&N Drop Ins \| Viper 3303 security system w/ tilt sensor \| GTR start button \| 35% rear 45% side window tint \| Michelin PSS

08-13-2013, 07:05 PM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	Not sure what page it's on - or if it's even in there. As far as I know, the window auto function and the radio presets are all that you need to worry about. And newer models don't require the window reset. Edit: You can expedite the process by pressing on the brake pedal for a few seconds (or put some other load on the electrical system). __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

08-14-2013, 04:37 PM	#4 (permalink)
Elan Track Member Join Date: May 2013 Location: Alpharetta, GA Posts: 906 Drives: Airplanes Rep Power: 15	I believe disconnecting the negative terminal will reset it. Dunno if you have to wait a certain amount of time or not. __________________ 2009 370Z NISMO #477 \| AAM Competition Short Tails \| AAM Competition HFCs \| K&N Typhoon CAI \| Kenwood DPX300U \| Rockford Fosgate PRIME R300-4 \| Rockford Fosgate Punch P165 \| Rockford Fosgate Punch P300-12 \| Polk Audio db1001 \| 15% Tints \| GTR Start Button \|

08-14-2013, 04:56 PM	#6 (permalink)
cdoxp800 A True Z Fanatic Join Date: May 2009 Location: FL Posts: 1,337 Drives: 2011 Nismo Rep Power: 18	ECU Resetting Procedures Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful. Operations Procedures 1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds. 2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds. 2a. Fully depress the accelerator pedal (HARD). 2b. Fully release the accelerator pedal. 3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking. 4. Fully release the accelerator pedal (while the CEL is still blinking) 5. Wait about 10 second. 6. Fully depress the accelerator pedal and keep it for more than 10 seconds. 7. Fully release the accelerator pedal (The CEL light will continue to blink). 8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone. If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU. 370zBoyz likes this. __________________ 2011 Brilliant Silver NISMO 370z. #: 0046. PPE LTH \| MillSpec Cats \| F.I Exhaust \| Akuma Intakes \| Rotora 6/4 Brakes

08-14-2013, 10:40 PM	#8 (permalink)
mag_black A True Z Fanatic Join Date: Mar 2013 Location: Massachusetts Posts: 1,400 Drives: 09 370Z MT6 Rep Power: 666	I follow this Easy Way to Reset ECU without battery disconnect in G37 - YouTube Go w/ the video and it'll work every time. __________________ fujimura ≠ abbeyRoadCompany ≠ fastIntentions ≠ motordyne ≠ avantGarde ≠ ecutek ≠ nismo ≠ stillen ≠ stoptech ≠ gtm ≠ spl ≠ carbonfiberelement ≠ stance™

08-14-2013, 03:38 PM	#3 (permalink)
bacalhau1669 Base Member Join Date: Jun 2013 Location: palm coast Posts: 86 Drives: 2013 Base Sport Rep Power: 11	I disconnected the battery on my 2013 while installing my intakes. I did not have to do anything afterwards. Just plugged the car back in and went off. It was unplugged for about 3 hours also. Perhaps I got lucky. Otherwise, the DIY section of this forum probably has your answer. There's a lot of great threads there.

08-15-2013, 11:38 AM	#10 (permalink)
martin82 A True Z Fanatic Join Date: Nov 2011 Location: los angeles Posts: 2,636 Drives: 12 Nissan 370Z MB M6 Rep Power: 19	I bought a $20 obd2 reader lol

08-15-2013, 01:17 PM	#11 (permalink)
kfull Track Member Join Date: Mar 2012 Location: Massachusetts Posts: 909 Drives: A lot Rep Power: 14	I might try to do this this weekend. Should it really make a difference in the the car if I have a few mods( CBE and k&n filters)? I haven't done anything with the CPU as far as resetting or a tune yet. I don't really need a tune anyways just having a CBE and the drop in filters. __________________ 2012 GM 6MT sports package \| FI non res cf exhaust \| K&N Drop Ins \| Viper 3303 security system w/ tilt sensor \| GTR start button \| 35% rear 45% side window tint \| Michelin PSS

08-15-2013, 01:55 PM	#12 (permalink)
martin82 A True Z Fanatic Join Date: Nov 2011 Location: los angeles Posts: 2,636 Drives: 12 Nissan 370Z MB M6 Rep Power: 19	FYI pepboys will clear ur code, so will autozone for free (I know in CA they don't allow to rent the obd2 reader for free anymore) I think in ur state they still allow it.

10-07-2013, 03:36 PM	#14 (permalink)
TexasChuck Track Member Join Date: Oct 2012 Location: SE Texas Posts: 556 Drives: 2014 Black Cherry Co Rep Power: 13	Still having Trouble I did the reset with an analog watch three times. The lights cleared and stayed off for a few seconds and came right back on. (I had installed the K&N cold air intakes. ) What next!!!!!!! Chuck

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