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Auto On/Off Cancel Solution

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Old Jan 13, 2026 | 09:14 PM
  #1  
Elzot's Avatar
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Default Auto On/Off Cancel Solution

2020 Discovery Landmark. I've read a number of posts on turning off the auto on/off feature where it was stated the only way was with a Gap tool.
Well, my mechanic did it with Launch. Using Launch, he identified the module and disconnected it.

Dash shows the off symbol that shows when it's manually turned off. If I push the on/off button a message pops up saying the feature isn't available.

No codes, no other unintended events noticed.

It's only been a couple days, so I'll update this post if problem shows up.
 
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Old Jan 14, 2026 | 07:51 AM
  #2  
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Originally Posted by Elzot
2020 Discovery Landmark. I've read a number of posts on turning off the auto on/off feature where it was stated the only way was with a Gap tool.
Well, my mechanic did it with Launch. Using Launch, he identified the module and disconnected it.

Dash shows the off symbol that shows when it's manually turned off. If I push the on/off button a message pops up saying the feature isn't available.

No codes, no other unintended events noticed.

It's only been a couple days, so I'll update this post if problem shows up.
Not sure how the Launch was involved. There's a power quality module in the right rear compartment all the way in the bottom just forward of the jacking kit. I'm sure the mechanic disconnected the plug from that module. As far as I can recall, the module is a supercap that ensures all the electronics have power when the starter engages and draws massive amps from the battery. If the car cant verify it's there then it won't allow start/stop to function. I ran mine like that for a while before changing the setting with my GAP tool when I got it.

Either way, not having to disable start/stop every time you get in the car is pretty nice.
 
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Old Jan 14, 2026 | 10:50 AM
  #3  
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Originally Posted by Chucktastic
Not sure how the Launch was involved. There's a power quality module in the right rear compartment all the way in the bottom just forward of the jacking kit. I'm sure the mechanic disconnected the plug from that module. As far as I can recall, the module is a supercap that ensures all the electronics have power when the starter engages and draws massive amps from the battery. If the car cant verify it's there then it won't allow start/stop to function. I ran mine like that for a while before changing the setting with my GAP tool when I got it.

Either way, not having to disable start/stop every time you get in the car is pretty nice.
Especially the Td6 - stopping and starting that is very noticeable and IMHO not good for the engine.
 
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Old Jan 14, 2026 | 12:25 PM
  #4  
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Originally Posted by sowrco
Especially the Td6 - stopping and starting that is very noticeable and IMHO not good for the engine.
I don't have the td, but I don't think it's great for any engine. Yes, the starter may be strong enough. But what about tthe circulation of coolant and oil stopping? Especially in traffic with constant on/off due to traffic lights, traffic jams? Can't be doing the engine or the battery any good.
 
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Old Jan 19, 2026 | 07:58 AM
  #5  
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I unplugged mine from the module (as Chucktastic states)a few years ago and have never had any issues or codes. Long term stopping and starting just cannot be good on those parts.
 
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Old Feb 9, 2026 | 08:24 AM
  #6  
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From: Cumming GA
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Can you pls share the GAP tool module/setting to turn this off
 
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Old Feb 9, 2026 | 08:57 AM
  #7  
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Try this:

MultiCAN-566 MHLastUserMode
Last user memory mode enabled
 
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