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DiscoWeb Bulletin Board » Message Archives » 2003 Archives - Discovery Technical » Archive through March 24, 2003 » Trailer symbol flashes on dashboard with turnsignals?? « Previous Next »

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Brad Smith (B_smith)
New Member
Username: B_smith

Post Number: 4
Registered: 02-2003
Posted on Tuesday, March 18, 2003 - 07:38 am:   Edit Post Delete Post Print Post

The trailer symbol flashes on dashboard with turnsignals and hazards. I do not have any trailer wiring hooked up but it started this after I hooked up the indicators on my ARB bumper. Is this normal? Can it be turned off? Thanks,
Blk 01'
 

Alyssa Brown (Alyssa)
Member
Username: Alyssa

Post Number: 46
Registered: 01-2003
Posted on Tuesday, March 18, 2003 - 07:51 am:   Edit Post Delete Post Print Post

It is normal. It should always flash once every time you put the indicator on, reminding you that you may have a trailer behind you. If it flashes the entire time you have the indicators on, you may have some wiring issues with the ARB. Traditionally, consistent flashing relates to a trailer actually being hooked up (which the car determines by power being drawn from the back wiring somewhere). If you really want it off, take out the bulb!
 

JEEPETR (Jeepetr)
New Member
Username: Jeepetr

Post Number: 8
Registered: 02-2003
Posted on Tuesday, March 18, 2003 - 10:15 am:   Edit Post Delete Post Print Post

Brad,

I'm a little confused, at least on the Discovery Series I, the lamps next to the headlamps are the turn indicators, and the wiring from the side marker lamps that you took off with the original bumper are usually used to power lamps in the ARB bumper. These would be tied into the marker lamp circuit, separate from the turn signal circuit.

If you have a Discovery II, this different. I believe the side lamp (next to the headlamp) has a dual filament bulb, one for the marker lamp, and one for the turn signal indicator. If you have tied the lamps in the ARB bumper into the circuit for the original turn signal, without disabling the original bulb, you have increased the load on the circuit. An increased load is how the system "detects" trailer lamps connected, and flashes the trailer indicator. Idea being that if the trailer is incorrectly corrected, or has a burnt out bulb, the trailer indicator not flashing would let you know it. My guess is that you have added load to the system, and the system is interpreting it as trailer wiring connected, as it is theoretically suppose to. Sorry about the long winded reply...

~Scott T.
 

Peter Sharratt (Gummikuh)
New Member
Username: Gummikuh

Post Number: 15
Registered: 02-2003
Posted on Tuesday, March 18, 2003 - 01:05 pm:   Edit Post Delete Post Print Post

Hi Brad
This is common as everybody decides to tie in the second set of indicators as per earlier discoverys.
The relay is seeing an extra load which it thinks is a trailer.
To get around this, you need to change the relay and put in AMR4873, this should be under your dash somewhere.
Pete S.
 

Brad Smith (B_smith)
New Member
Username: B_smith

Post Number: 6
Registered: 02-2003
Posted on Tuesday, March 18, 2003 - 08:58 pm:   Edit Post Delete Post Print Post

Thanks for the info everyone.
Peter,
Thats kind of what I thought...damm truck is smarter than me. Do you know what effect the new relay will have if I really do hook up a trailer? Thanks! Brad
 

Peter Sharratt (Gummikuh)
New Member
Username: Gummikuh

Post Number: 16
Registered: 02-2003
Posted on Wednesday, March 19, 2003 - 04:02 am:   Edit Post Delete Post Print Post

Hi Brad
Put in the heavy duty relay and the trailer symbol will only flash when a trailer is hooked up. This is the relay fitted to 200 TDi Discoverys here in the UK and once plugged in causes no problems.
The part number is a LR number, they cost about £15-£20 here, if you want one and cannot source one in the States, get back to me direct to barter.
Pete S.

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