skywalkercji

Can anyone assist me in determining if this vehicle has a programmed theft deterrent such as an immobolizer? I replaced a bad starter and now the vehicle has no sound when pressing the start button. Bench tested OK, power to the starter. No power to the solenoid lead when pressing the button. Battery is OK.
I am wondering if it goes into a lockout mode when the battery is disconnected? I would appreciate any help! Thank you.

chassis

Welcome! Please post a photo of the GLK.

How do you know the battery is good?

Try the search button on this site. This issue has come up before and bad battery is the most common cause.

MJ50

moved to X204 forum...

skywalkercji

Battery is good because I gave it a load and voltage test.
The key to this is the solenoid lead is not getting voltage when the start button is pressed. That is why I am thinking there may be an inhibitor or immobilzer when the battery is disconnected and reconnected. The starter button passes ohm and conductivity tests, dashboard lights up normally.

Mmr1

There is a second battery in back for the Stop Start system. I have no idea if this is relevant to your problem.

ZZGlk

Power to operate the starter comes from a relay in the front SAM. There is at least one fuse that's located close to the battery that protects the starter. I'd check that big fuse and make sure it's not blown. You should be able to follow the main power lead from the starter back to the battery fuse. On my GLK, the fuse is located under the red cover on the positive battery terminal. If you don't have juice at the main solenoid lead, that fuse is the only thing in between the battery and the solenoid. Any security stuff would usually be looped in before the SAM signal is sent to operate the solenoid.

skywalkercji

Thanks ZZ -

I will check it out today. Appreciate the information.

bop11

Believe it or not, some rebuilt starters don't work right out of the box. Do you hear a click from the starter? If yes starter is bad, if no fuse or relay is bad, assuming you are using the correct key. If you have keyless start, try removing the start button and use the key directly into the dash.

skywalkercji

Thank you BOP11 great suggestions. Will try that. I did not know you can remove the start/stop button and use the key.