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Old 08-06-2015, 04:54 PM   #1
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wimberleyman's Avatar
Join Date: May 2012
Posts: 242
Park Brake Switch Constant Chime

Left Lakeside TX Campground Monday headed for Colorado. About 15 miles into the trip a constant chime begins (ding, ding, ding). Sounds like the ding when the transmission is in neutral and the park brake is not set. Chassis is 2001 XCS with Allison 3000 trans. Pulled off the road, put in neutral, set brake and chime stopped. Started out again and after about 30 seconds chime starts again. Pulled off the road again and called Freightliner technical support in Gaffney. Described problem to tech and he says the Park Brake Switch has gone out. Part number is 06-31933-000. He said it is located on the frame rail just in front of the driver's side rear wheels. I can order one from Gaffney and have it delivered to my destination. Problem is I have 4 days of travel before I reach my destination and I have to listen to this chiming until I get there!

He described the switch as a fairly simple replacement that bolts on and has a 3 wire connector. I asked if I could just disconnect the wire harness until I can get the new switch to replace the old one. He said he didn't think that would stop the chime because a connection had to be made for the switch to work.

My current solution is 2 pillows stuffed under the dash to muffle the chime and the CD player turned way up. Works, if you like loud music.

Preferred solutions:

#1 Find the chime under the dash and try to disable it. Anyone know where it is located?
#2 If I knew what the park brake switch looked like and it's exact location I would un-plug the harness and see if that would dis-able the chime. Can anyone provide info on this?

2001 Cruisemaster/300 Cat
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Old 08-06-2015, 07:57 PM   #2
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Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 28,895
The wiring harness from Freightliner, to the manufacturer, comes loose on top of an empty frame , the coach manufacturer builds the dash and depending on who did the dash install, the chime could be anywhere within a three foot radius of the fire wall main harness connector.
I know not what you wanted to hear.. It took me 3/4 hour to find mine , much easier with the dash cluster loose and tilted forward, the good news is once you find it it's easy to re-locate for next time .
I don't have a picture of the location of the sensor , I have seen mine , but if you follow the air lines from top pots on the drivers side rear air brake you will find it as described on the frame rail.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 08-06-2015, 08:08 PM   #3
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Join Date: Nov 2003
Location: Richmond Hill, GA USA
Posts: 707
I've changed mine one time. It connects the air lines together, and has 3 wires. Not too hard to change if you have long arms.

I tried but could never find the noise maker under the dash.

Have you looked for a fuse to pull? you might get lucky there. That thing will drive you crazy on a long trip.

Good luck

Fred & Vicki
St. Augustine, Fl.
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