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67_6Cyl



Member Since: 10 Feb 2010
Location: France
Posts: 97

France 
AMR6104
Hi customer service guys........

AMR6104 is the current version of the Defender sidelight/dipped beam light switch. This part is well known to be of relatively poor quality, and fail regularly - to such a point that my local authorised repairer doesn't just stock one, but has 2 or 3 on the shelf, as well as the equivalent reference for earlier Defenders (that have an identical switch, but with a different connector).

The headlight circuit is a poor design with no relay - hence all the current flows through the switch. Then, the switch itself is also a poor design. What appears to be the main failure mode is that the current is sufficient to heat up, and melt the PTFE backing on which the contacts are attached - then the contacts are slowly pushed through the softened PTFE until they no longer make contact.

I am now on my second replacement of this switch in a 2007 Defender for exactly this reason. This is not the real reason for writing this, however annoying it might be to have to replace it twice in 6 years. What really got me when I bought the replacement was that the wire guage used is now thinner, and hence it will heat up more, and the white PTFE backing now also appears thinner. So, an already poor system (both circuit design and switch) has now become even worse.

Then the price - why is it €144, when the same part from Lucas (who claim to be the OEM) costs only about 20€? - does the difference in price mean that nobody buys the switch from you, so you haven't realised there is a problem with it?

What is going on Landrover? This is a problem that has existed since the very first 110s back in the 80s!

Jon


Click image to enlarge


PS photo shamelessly taken from the german landypedia.de site, as the problem is so recurrent that they have a page on it.
Post #267607 18th Sep 2013 9:42am
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6031

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
Just do what everyone else does... make up a loom with a couple of relays in it, so this weak switch just turns on the relay, for either sidelights or dipped beam.
Post #269963 28th Sep 2013 5:37pm
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dorstsmith2



Member Since: 06 Aug 2012
Location: On the third rock from the sun in dorset
Posts: 188

United Kingdom 2003 Defender 90 Td5 HT Caledonian Blue
( € ) Wat is this Whistle O french
Post #269969 28th Sep 2013 5:57pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
If you buy LED lights, they draw less current Wink
Or if you can't be arsed to make up your own loom you can buy them, e.g. here:
https://shop.landreiziger.nl/lichtversterk...elais.html
Matt Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #269971 28th Sep 2013 6:09pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
Thread resurrection - any chance of a response from JLR to the original post above?
Post #484938 23rd Dec 2015 9:44pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

England 2004 Defender 110 Td5 CSW Bonatti Grey
Rolling with laughter
Insert stock "I can only comment on actual cases" answer. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #484989 24th Dec 2015 12:44am
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Happyoldgit



Member Since: 14 Sep 2007
Location: Norfolk
Posts: 3471

United Kingdom 2015 Defender 110 Puma 2.2 USW Corris Grey
Seriously, what kind of response do you expect, the Defender is history, they were not interested back in 2013 let alone now.

Read the script of the Monty Python dead parrot sketch and replace the word parrot with Defender Wink Steve.
Owned numerous Land Rover vehicles of all shapes and sizes over the decades.
Current Defender: A non tarts hand-bagged Puma 110 XS USW.

[Insert something impressive here such as extensive list of previous Land Rovers or examples of your prestigeous and expensive items, trinkets, houses, bikes, vehicles etc]

http://forums.lr4x4.com

I used to be Miserable ...but now I'm ecstatic.
Post #485164 24th Dec 2015 6:54pm
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