Ignition command

[Kevin johnson]

Hi guy's I am trying to run a diagnostic test on my s600 but the command keeps knocking off the ignition after 3 minutes and this also knocks off the diagnostic machine, is there any way to turn the command off so i can run a test with the ignition on without the engine running? Would appreciate any help thanks

 

[mattkh]

Wonder if leaving the driver door open would work...!

 

[alexanderfoti]

Put a battery charger on it (a big one! 20+ amps). Its doing it because of low battery voltage.