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Old 04-08-2016, 05:14 PM   #1
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Auxiliary Start Switch not working

I have a 06 Discovery 39L. The auxiliary start switch is not working. I hold the switch down while trying to start.(nothing??)
The generator starts so I know the house battery are Ok.
I have it connected to shore power but the chassis batteries are not being charged.

Can anyone tell me how to locate the solenoid? Any help would be appreciated.

Joe
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Old 04-08-2016, 06:19 PM   #2
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Don't own a Fleetwood coach but here's my guess.

Chances the solenoid is located close to the location of both the house and chassis batteries. This will reduce voltage drop. Trace the large red wires from each of these banks and they should come together onto a solenoid. The house batteries will be on one side and the chassis on the other.
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Old 04-08-2016, 10:06 PM   #3
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Quote:
Originally Posted by jobo44655 View Post
I have a 06 Discovery 39L. The auxiliary start switch is not working. I hold the switch down while trying to start.(nothing??)
The generator starts so I know the house battery are Ok.
I have it connected to shore power but the chassis batteries are not being charged.

Can anyone tell me how to locate the solenoid? Any help would be appreciated.

Joe
Joe,
We too don't have a Fleetwood product but, if your coach is on a Freightliner chassis, there's some things here that need to be cleared up before we proceed with the most applicable answer to your situation. It's a long story but, the short one is, at least in Winnebago and Itasca products, Winne and Itascas did not have chassis battery charging capabilities prior to late '05 or early '06. Many Winne and Itasca owners would return to their coaches after even a semi-long storage period and, found the chassis batteries dead, even when the coaches were left plugged in.

Well, Winne finally figured out how to remedy this dead chassis battery situation. They started adding what's called the "Trik-L-Start" unit. In short, it's not a battery charger. It's simply a small black box, about the size of a pack of cigarettes that, when plugged into shore power, it sees the difference in the voltage between the chassis batteries and the house batteries.

When it see's a .5 V difference, it jumps into action. It will simply "siphon" off some of the intended charging, from the local Inverter/charger, that's intended for the house batteries, and send it to the chassis batteries. The only limitation of it is, it's limited to a maximum of 5 amps that can be diverted to the chassis batteries which, for most cases, is just fine.

Now, does any of this long winded stuff apply to you? Well, maybe and maybe not. You say your coach is an '06. And, if it's a Freightliner and, Fleetwood did the same thing that Winne and Itasca did, they too might have added that "Trik-L-Start" to your system. But, only you or, maybe a knowledgeable Fleetwood tech or owner might chime in to say whether your coach is supposed to have something like the Trik-L-Start, or not.

Now, all this info so far, applies to CHARGING THE CHASSIS batteries, while plugged into shore power. And, since you're experiencing DEAD chassis batteries AFTER it's been plugged in for a reasonable amount of time, then it's safe to assume, that if you have something like the Trik-L-Start, it's malfunctioning or, there's a break in line some place that's causing the chassis batteries to go dead.

Now, as for your "Auxiliary Start" or, "Boost" switch non-function, well that's a whole 'nother story. On Winne and Itasca products, it's not anywhere near the batteries, as one of your posters suggested it should be. In fact, on many Itascas, it's at the opposite end of the coach, from the batteries. A seriously stupid move by Winne and Itasca.

But, I have no idea where that solenoid would be located on your coach. And, in our cases of Winne and Itasca, that same solenoid is also responsible for linking the house and chassis batteries together for charging, from the engines alternator. So, I know this has been a long answer but, your problem may have multiple issues, that are not working all at the same time. So, some investigation into whether or not you have any form of chassis battery charging, i.e. the Trik-L-Start or, anything like it, when plugged into shore power.

And second, to find out if that Auxiliary boost solenoid, does the same dual duty, on your Fleetwood coach, as it does with our Itasca. Let us know when you find out..
Scott
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Old 04-09-2016, 06:28 AM   #4
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jobo44655-

Here's a link to a post from a similar prior iRV2 thread. The link in that post is dead, but "Old Bounder" is alive; you may want to send him a private message.

Here's a link to another "Old Bounder" post from a similar thread.
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Old 04-09-2016, 10:30 AM   #5
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Joe;

Below is a photo of the Trik-L-Start that Scott mentioned and the auxiliary start solenoid in our '06 Itasca. Your Fleetwood may be different, but this is a starting point for where to look. The solenoid is the large, silver can in the lower part of the photo. I had the same problem with the Itasca, the solenoid had quit and neither the boost nor the engine charging feature would work. I added the Trik-L-Start to keep the chassis batteries charged while on shoe power or generator.
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