PDM switch issue

mjolnir131 · Feb 18, 2009

We have hunted truck syndrome. Dash lights, radio, CB, blower motor going on and off when the key is not in the ignition.

Called Freightliner to see when we can get in. They diagnosed it as a PDM switch problem and said it would take having to sit in the body shop for a few days to dry out to see what was possibly burnt.

Question is there a faster way they can take care of it, 2 days out this time of year is bad real bad.

apollopaul · Feb 19, 2009

Try a Bible and maybe a cross.

mjolnir131 · Feb 19, 2009

Are we just making a exorcism joke or are we also saying I'm SOL and you can't dry it out with an air hose or something and I'll have to sit for two days?

highway star · Feb 19, 2009

My guess would be that moisture that develops inside of some electrical parts would be an issue.

nightcreacher · Feb 19, 2009

highway star said:
My guess would be that moisture that develops inside of some electrical parts would be an issue.

not sure what a PDM switch is,but since your truck has many mexican parts,that may be the issue.

moose · Feb 19, 2009

nightcreacher said:
not sure what a PDM switch is,

well , now we all know ... :

https://secure.freightliner.com/acc...ublic/m2bodybuilder/component/ma5417000wm.pdf

Moose.

when its happened , tare off the dash along the way , and look for hot spots along major electric lines and connectors ,
i once had an over heated ignition switch on a 01 Century . , called ahead - and when i got to the shop it was a simple switch so 2 speak ...

Moose.

mjolnir131 · Feb 20, 2009

OK update.it's not the module nor wiring that that needs drying out that takes the time. it's redoing all the seals and joints that let the water leak in,in the first place that need several hours to cure(IE dry).

The part is in the column panel left side of cab behind the driver seat. The leak or leaks develop above that.

you can short the PDM out and take the key out of the truck and it will still continue to run.

I'll be lucky to get back in service soon enough to get a load for this week end going to be a real thin week I'm afraid.

moose · Feb 20, 2009

hopefully you have the CLC card ,

what city are you in ?

Moose.

mjolnir131 · Feb 20, 2009

the FYDA dealer near Washington,PA west of Pittsburgh

they wear able to pull the truck out last night so no problems there ,big convention in town leading to a Mary and Joesph syndrome and all, and i hope to be on the road by 2:30 -3:00 but it just being that late in the day makes run for the week end scarce.

moose · Feb 20, 2009

This is a good Dealership from my Experience ,except from the up the hill to the right entrance ..., kind of a task with a fully backed trailer.
not mach to do in that neck of the wood ,
you out yet ?

Moose.