Teckonsha Prodigy brake controllers - here we go again....

Submitted: Tuesday, Jan 30, 2007 at 16:25
ThreadID: 41789 Views:4233 Replies:11 FollowUps:5
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Discovered that the Jack would not start due to flat batteries. Ok they were getting on a bit, nearly 5 years old. NRMA battery man arrives & load tests them both & of course says both are stuffed so I'm up for 2 new batteries...
He gets in the Jack to start it, notices the Prodigy in its fixture and asks me do I leave it plugged in all the time, "Not designed for that you know, sposed to disconnect em if you are not towing"....
Well you can all see where this is leading so after he goes I get out the trusty meter and do a few checks. Without the Prodigy in the circuit with ignition off ie as you would expect to leave the vehicle in the garage I got a 40 mA drain... with the Prodigy plugged in I got a 437 mA drain, that is nearly half an Amp!!!!
Guess what I can't find what the idle current for them is anywhere but for now unless I'm using it the Prodigy can stay in it's nice little balistic nylon condom...
Any comments most welcome, I'm off to round up the usual suspects....
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Reply By: Member - Roachie (SA) - Tuesday, Jan 30, 2007 at 16:29

Tuesday, Jan 30, 2007 at 16:29
Sounds like I'm gunna have to plumb-up another switch. I wouldn't be bothered removing it whenever I'm not using it, but easy enough to re-wire either through a switch or maybe power-up via ignition circuit so it's only on when the donk is running.
AnswerID: 218624

Follow Up By: Mr Fawlty - Tuesday, Jan 30, 2007 at 16:41

Tuesday, Jan 30, 2007 at 16:41
Now that's a thought... I might have a look at mine "on the bench" and see what pins the current is being pulled thru. It may be faulty, dicky diode or whatever....Having thought about it the only way it could be getting power is via the brake light connection which is active all the time in the Jack so simply fitting a switch to the hot side of that would stop power getting there. Then of course some sort of mechanical interlock to prevent the vehicle being driven with the switch off and another coloured light to tell me the switch is on/off. I may harangue Teckonsha and see what info I get....
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FollowupID: 479059

Follow Up By: Utemad - Tuesday, Jan 30, 2007 at 21:27

Tuesday, Jan 30, 2007 at 21:27
I know nothing about these things but since you have said that the unit gets power from the brake circuit I will just say that not all vehicles brake lights work all the time. Some vehicles such as my 1994 Discovery have brake lights that only work with the ignition on.
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FollowupID: 479143

Reply By: Member - Wim (Qld) - Tuesday, Jan 30, 2007 at 16:44

Tuesday, Jan 30, 2007 at 16:44
Mr Fawlty

Thanks for that, now you know what I and many other will be doing to-night.

Regards

Wim
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July 2012 - Hay River & Binns track
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AnswerID: 218630

Reply By: Robbg - Tuesday, Jan 30, 2007 at 17:07

Tuesday, Jan 30, 2007 at 17:07
I reckon when I wired my Prodigy in I recall reading that the display stays on for 15 minutes or so after the ignition is turned off and then goes to sleep. I've noticed that this is the case in my Jack. Mind you, I've not tested the current draw with the display on or off. Not real keen to give it a go either - it's a real back breaker to get under the dash. Rob.
AnswerID: 218638

Follow Up By: Flash - Wednesday, Jan 31, 2007 at 21:20

Wednesday, Jan 31, 2007 at 21:20
Correct.
It goes to "sleep" after some time.
There's bugger all current draw then.
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Reply By: Member -Dodger - Tuesday, Jan 30, 2007 at 17:34

Tuesday, Jan 30, 2007 at 17:34
I have had the Prodigy for 2 years and never had this problem.
It's always left hooked up, but then again my vehicle is used at least once a week.
I used to have a handle on life, but it broke.

Cheers Dodg.

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AnswerID: 218645

Reply By: Bilbo - Tuesday, Jan 30, 2007 at 17:35

Tuesday, Jan 30, 2007 at 17:35
Nice one Fawlty - you nearly got away with that one. But,,,,,,,,,,,,,

I leave mine plugged in all the time but now, yes you're right Fawlty. I am a little more impressed with you.

So now, maybe I won't

;)

Bilbo
AnswerID: 218647

Reply By: Member - Franga (QLD) - Tuesday, Jan 30, 2007 at 17:44

Tuesday, Jan 30, 2007 at 17:44
Hi Mr Fawlty,
I was gonna fit one of them in my vehicle and an auto sparky told me not to as they have a habit of flattening Batteries.
I went to a Redarc unit and haven't had a problem.

Regards

Franga
AnswerID: 218651

Reply By: Gerhardp1 - Tuesday, Jan 30, 2007 at 19:34

Tuesday, Jan 30, 2007 at 19:34
I had my Evakool fridge running for 4 days at Glasshouse Mountains CP without starting the Jack, and also had the prodigy installed the whole time. If the Prodigy was drawing 1/2 amp for 4 days that would be 48 amps out of the battery (the battery is AGM 100aH), plus what the fridge needed which would be say 30% operational = 28 hours @ 2.5amp = 70 amps for a total drain of 118 amps out of the 100aH battery plus it then started the car no dramas.

Obviously that can't be true - the Prodigy must go to sleep after a short period.

Methinks the real problem is not with the Prodigy, but with your dead batteries.

After 5 years on standard lead acid batteries you have had a bonus year of operation, IMHO. My first Jack battery lasted exactly 4 years. Second one was taken out and the AGM put in after the next 4 years, it was still OK but useless for long term fridge running (as are all Lead Acid).

I also think the autolec who bags a Prodigy is wrong, probably self-serving so he can sell something else he has on the shelf.

A search of the forum will reveal very many happy Prodigy owners.

AnswerID: 218672

Reply By: MEMBER - Darian (SA) - Tuesday, Jan 30, 2007 at 21:02

Tuesday, Jan 30, 2007 at 21:02
Thanks for the tip - mine was put in our Jack by a pro installer - might have a look for a fuse that could easily be pulled (easier than putting in a switch) - I have been aware for some time that there is a circuit or two still running in the Jack after it goes to bed - can hear a bit of cyclic 'buzzing' at times on the HF if I'm playing - may be the brake controller, or any number of other wheelygigs that the makers design in, to drive us all mad !
AnswerID: 218703

Reply By: D-Jack - Tuesday, Jan 30, 2007 at 21:49

Tuesday, Jan 30, 2007 at 21:49
Mr Fawlty

Had mine in for about 12 months, vehicle not used for 1 month straight (no charge on battery etc), voltage drop was minimal after that time, with Prodigy still connected (only showing 1 little dot). I reckon it's probably not wired properly, or there is something else wrong somewhere in your vehicle. Mind you, 5 yrs is pretty good out of a battery. It may just be that they both went together.

But they way, I've got a 99 TD JAck, one of the 1st things I did was change the battery on the driver's side over to a 700cca calcium fully sealed battery, gives plenty of grunt, even in freezing conditions (using the right oil of course - if you dont' know what I'm talking about do a search on this forum about TD JAcks and oil). Then I had the electrical rigged so all vehicle power came from this battery. Fitted an auxillary battery on the other side using a simple bracket from TJM, isolated by a Pirahna isolator. Works a treat, aux power is priceless when camping.

Hope this helps

D-Jack
AnswerID: 218715

Reply By: Mr Fawlty - Wednesday, Jan 31, 2007 at 14:47

Wednesday, Jan 31, 2007 at 14:47
Problem solved! After sending off an email to the Tekonsha people in the USA and describing my problem I have just recieved an email telling me to take both the unit and a copy of the email to my nearest Tekonsha dealer and get the unit replaced. These should only draw a "few mA" while idle and my figures would indicate that there may be an internal fault... so maybe not today, maybe not tommorrow but soon and for the rest of the limited lifetime warranty I shall keep the Prodigy...
AnswerID: 218818

Follow Up By: Bilbo - Wednesday, Jan 31, 2007 at 15:53

Wednesday, Jan 31, 2007 at 15:53
Nice one, Fawlty,,,,,,,,,,,,,

This thread is finished, but I'll get ya, then we shall state another time another, place.

Bilbo
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FollowupID: 479253

Follow Up By: Leroy - Wednesday, Jan 31, 2007 at 23:40

Wednesday, Jan 31, 2007 at 23:40
tekonsha usa when contacted give great service. I just replaced my voyager becasue it had that brake light flashing issue (usa batch was sent to oz a fews back) and they were happy to swap or I paid $50 and got a Prodigy. Have to put it in now.

Leroy
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FollowupID: 479352

Reply By: MEMBER - Darian (SA) - Friday, Feb 02, 2007 at 17:08

Friday, Feb 02, 2007 at 17:08
Investigated mine - the pro installer has it running via a fusible link (toggles in and out but does not burn out) - was going to pull the fuse to disconnect it when not in use, but there is nothing to pull ! Have installed a switch in the feed line, just before the control unit - can turn it off and on in the cab. I ran a test and on my meter it was drawing up to .4A while connected to nothing (as you say) - bit odd - mine seems to oscillate between - .2A and .4A - seems a controlled, continuous cycle. Whatever - with all the wiring I've done on the Jack over 7 years, decomissioning it for resale will be a huge pain !
AnswerID: 219293

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