When does the ECU lose its long term memory?
Your ECU has now lost all of its long term memory values and will “reset” them all to defaults when it next powers on. By the way, the factory radio’s memory lasts for a minute or two, so you probably will not lose your saved stations. Sometimes people like to pull this fuse when they are working on or cleaning the interior of their car.
Why is Eclipse taking up so much memory?
The two most common culprits are Xmx and/or MaxPermSize being set too low (Xmx defaults to 256M and MaxPermSize defaults to 64M). You modify the values by passing command line arguments or tweaking the eclipse.ini in the Eclipse install location. My Eclipse is taking over 800MB resident, and 2GB virtual (part of it swapped out perhaps).
Why does the ECU have default numbers in trim memory?
The ECU now has default numbers in its trim memory – it has to adjust them to match the tune of your engine and its sensors and actuators. It might take a day or two of driving in traffic before the engine will settle down again. Now you know why the ECU remembers these values in the first place!
How to reset the engine control module ( ECU )?
The 2 most common ways to reset your car computer is by either unplugging the battery or by resetting the fuse related to the engine control module Will disconnecting battery reset ECU? Disconnect the battery and Switch the ignition key to the on position for about 15 minutes should reset the ECU
Your ECU has now lost all of its long term memory values and will “reset” them all to defaults when it next powers on. By the way, the factory radio’s memory lasts for a minute or two, so you probably will not lose your saved stations. Sometimes people like to pull this fuse when they are working on or cleaning the interior of their car.
What happens when the ECU of a car goes bad?
Car batteries have electronic cells which need to function in order for the ECU to function. If any of the cells in your car battery are dead, then your ECU is going to fail soon afterward. Once all the cells are dead, your entire vehicle won’t be able to function either. You won’t be able to even start your vehicle and get the engine running.
The two most common culprits are Xmx and/or MaxPermSize being set too low (Xmx defaults to 256M and MaxPermSize defaults to 64M). You modify the values by passing command line arguments or tweaking the eclipse.ini in the Eclipse install location. My Eclipse is taking over 800MB resident, and 2GB virtual (part of it swapped out perhaps).
The ECU now has default numbers in its trim memory – it has to adjust them to match the tune of your engine and its sensors and actuators. It might take a day or two of driving in traffic before the engine will settle down again. Now you know why the ECU remembers these values in the first place!