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Topic: Brake lights stuck on (Read 391 times) previous topic - next topic

Brake lights stuck on

Just parked and find my brake lights are all on. What gives?

This is  2003 U295. I believe the cruise control is still working, or was recently, so it doesn't think the brakes are applied. So the brake applied switch, wherever that is, is apparently not activated.

I looked at the relays in the front kick panel and see no relay having anything to do with brakes.

I looked at the schematic and there is an unlabeled relay, no idea what it does or where it is.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer

Re: Brake lights stuck on

Reply #1 –
Quote from: Tom Lang –
Just parked and find my brake lights are all on. What gives?

This is  2003 U295. I believe the cruise control is still working, or was recently, so it doesn't think the brakes are applied. So the brake applied switch, wherever that is, is apparently not activated.

I looked at the relays in the front kick panel and see no relay having anything to do with brakes.

I looked at the schematic and there is an unlabeled relay, no idea what it does or where it is.
Is your retarder stick on?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Brake lights stuck on

Reply #2 –
Retarder stick is off, retarder switch is off, engine is off.

I think retarder and cruise are working fine.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer

Re: Brake lights stuck on

Reply #3 –
Are you unhooked from your towed? I have had mine back feed to the brakes.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Brake lights stuck on

Reply #4 –
Yes. Toad is unhooked.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer

Re: Brake lights stuck on

Reply #5 –
Tom,

Check your brake light pressure switch.  They have been known to fail causing the brake lights to be on. Depending on the coach will depend on the exact location of the brake light switch. This is what changes the air pressure to an electronic signal.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Brake lights stuck on

Reply #6 –
Problem solved. Mea cupla.

Last week I had my mechanic add a wire from the coach battery through unused pins and an added wire on the toad harness to the toad battery.

Looks like he connected it to the brake wire.

Disconnected and all is well

Thanks.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer