[Searay55555]

Somehow I put the car into Diagnostic Mode today. I’m now really sure how. The dash said Diagnostic Mode, and the door light was blinking in a different way (quicker). I was able to then program the Homelink because the car stayed ‘on’ for a longer time. Anyone know how to put the car in this state?

[FAN460]

turn on the ignition and press the start button 3 times.

I will just let the car run if you just want to set the homelink.

[Searay55555]

How do you turn on the ignition on this car?
I’m trying to do some coding. I got the homelink set up already when it was in that mode.

[FAN460]

Originally Posted by Searay55555

How do you turn on the ignition on this car?
I’m trying to do some coding. I got the homelink set up already when it was in that mode.

Just tried mine. So you literally just get in the car, after the welcome stuff. You press the start button 3 times. I think the diagnostic mode is the "ignition on".

[Searay55555]

Originally Posted by FAN460

Just tried mine. So you literally just get in the car, after the welcome stuff. You press the start button 3 times. I think the diagnostic mode is the "ignition on".

I’ve tried that on someone else’s recommendation, but it doesn’t seem to do anything. When I was in diagnostic mode, it actually said that on the dash.

[FAN460]

Originally Posted by Searay55555

I’ve tried that on someone else’s recommendation, but it doesn’t seem to do anything. When I was in diagnostic mode, it actually said that on the dash.

Mine said diagnostic mode. All I did is press the start button 3 times quickly. Maybe give it a couple more try?

[ToneM2]

Pretty sure you just press the start button 3 times quickly and it should pop up Diagnostic Mode on the display. Not sure what it does other than it's like an accessory mode so you can have the car on without the engine running.

[Searay55555]

Thanks guys! I pressed the button slowly. I’ll give it another shot tomorrow. Maybe this is the source of my coding issues. I’ll report back.

[Searay55555]

Originally Posted by ToneM2

Pretty sure you just press the start button 3 times quickly and it should pop up Diagnostic Mode on the display. Not sure what it does other than it's like an accessory mode so you can have the car on without the engine running.

That was it! 3 fast pushes worked great this morning. Thanks!

[FAN460]

Originally Posted by ToneM2

Pretty sure you just press the start button 3 times quickly and it should pop up Diagnostic Mode on the display. Not sure what it does other than it's like an accessory mode so you can have the car on without the engine running.

It is the proper “ignition on” mode, means all ECU gets power etc.