"P" doesnt' light up in park

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Oct 17, 2023 | 07:58 AM

ggenovez

Thread Starter

Mountain Pass

Joined: May 2015

Posts: 140

Likes: 5

"P" doesnt' light up in park

Hi all,

When I put it in park the P doens't light up. This prevents the truck from going to "sleep" mode and kills the batteries.

This is a 2008 F350 6.4. Any ideas?

Oct 17, 2023 | 09:10 AM

99powerstrokedF250

Logistics Pro

Joined: Jan 2010

Posts: 4,100

Likes: 1,635

IIRC that still has a shift cable running from the shifter down to the transmission.

Are all your other indicators lighting up? It is likely that everything is worn, and your shift linkages/cable needs adjustment.

I don't have one of these around anymore, so I don't know how involved the process is, or if it's even possible without replacing components.

Oct 17, 2023 | 09:23 AM

ifrythings

Fleet Mechanic

Joined: Aug 2011

Posts: 1,572

Likes: 258

Quote:

Originally Posted by ggenovez

Hi all,

When I put it in park the P doens't light up. This prevents the truck from going to "sleep" mode and kills the batteries.

This is a 2008 F350 6.4. Any ideas?

Had this same issue when I was bench testing a few clusters, the shift interlock solenoid on the column that requires you to push the brake to shift also tells the cluster when the shifter is in park and if the cluster never sees this go to ground it won’t go to sleep.

As said above, make sure the transmission is truly going into park, no shift cable issues or large clumps of dirt around the shifter mechanism on the transmission, if that’s all good check the shift interlock solenoid on the top of the column and see if that green wire is going to ground when in park.

Oct 17, 2023 | 10:26 AM

ggenovez

Thread Starter

Mountain Pass

Joined: May 2015

Posts: 140

Likes: 5

Thanks everyone.

@99powerstrokedF250 Yes, all the other illumine correctly.

@ifrythings looks like I can get the light to stay on if I "gently" put it in park, but if I slam it in park and push it forward the light goes off. Also, I can start the truck without pressing on the brake.