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Meiang



Member Since: 29 Apr 2011
Location: Perth
Posts: 228

Australia 2010 Range Rover Sport TDV8 HSE Santorini Black
OSRAM LEDFOG 101 DRL/Fog Lamps - Battery Charging Issue

I just fitted a set of OSRAM LEDFOG 101 DRL/Fog Lamps to my 2010 TDV8. Everything worked fine until I plugged my CTEK MX5 charger. After the charger had gone through its analysing stage the DRL lamps started flashing intermittantly. I have read a report elsewhere with a similar issue.
It appears that the control unit will still energise the lamps without the ignition on wire being energised if the battery voltage is above a certain value (around 13.2-13.3V).
The only fix for this problem is to put a relay on the battery feed wire so that there is no power going to the control unit when the engine is switched off.

The DRL function is excellent.
The fog light function is not very good. Not a problem for me as we never get fog here.
The cornering light function uses the fog light so it doesnt do very much.

Post #547126 Tue Jan 30 2018 3:07pm
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Meiang



Member Since: 29 Apr 2011
Location: Perth
Posts: 228

Australia 2010 Range Rover Sport TDV8 HSE Santorini Black

I forgot to mention once the CTEK charger voltage gets to about 13.6-13.7 volts the DRLS are lit permanently.

Post #547129 Tue Jan 30 2018 3:51pm
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RRSTDV8



Member Since: 13 Aug 2011
Location: Northamptonshire
Posts: 5749

United Kingdom 2008 Range Rover Sport TDV8 HSE Stornoway Grey

Presumably the DRL controller isn't very intelligent and just assumes high voltage means "engine running" so turns on the lights? 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #547136 Tue Jan 30 2018 4:46pm
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Meiang



Member Since: 29 Apr 2011
Location: Perth
Posts: 228

Australia 2010 Range Rover Sport TDV8 HSE Santorini Black

You would think the ignition on wire would control whether the lights are on not voltage on the permanent supply. I think the ignition on wire is for cars where battery management systems operate and it tells the lights to go on irrespective of battery voltage which can drop down to 12.7v

Post #547140 Tue Jan 30 2018 5:55pm
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Andy K



Member Since: 18 Sep 2015
Location: GL
Posts: 1827

England 2005 Range Rover Sport TDV6 HSE Rimini Red

that's the problem with aftermarket bits.

Designed for easy installation to all sorts of cars.

Just move the controller battery + wire to an ignition supply, and see if they work ok then.

Post #547143 Tue Jan 30 2018 6:08pm
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