Hi there! I've recently picked up a 2012 XLJ Supersport after my old XF finally kicked the bucket. It's an amazing car with just one obvious fault - the remote in the back. It doesn't turn on, but the two yellow LEDs flash constantly when it's out of its cradle. It looks as if it is properly seated. Any thoughts on this much appreciated.


It might just need a new battery after more than a decade of use by the previous owner, or this might be a known fault. The manual suggests the remote is not user-serviceable, but I reckon changing the battery might be within my capabilities.

 

Battery is replaceable but until recently difficult to find.
Original varta specs:
3.7V, 1330 mAh, 5.0 Wh - 1/LIP 663450 MC PRISMATIC
Microbattery VARTA original
Specs
•Genuine VARTA Branded Lithium Ion Cell
•Dimension (max.): Length - 54.5mm, Height - 6.0mm, Width - 35mm
•Nominal Voltage: 3.7 V
•Rated capacity: 1330 mAh
•Watt-hour rating: 5.0 Wh
•Charging Method: Constant current & constant voltage
•Charge current: Standard: 170mA (8hrs), Maximum: 850mA (2.5hrs)
•Maximum charge voltage: 4.20V (ą50mV)
•Protection Circuit Module (PCM): Overcharge at 4.30V, Overdischarge at 2.4V
info@varta-microbattery-usa.com

I have seen this on Aliexpres which should work 1200mAh Battery for Range Rover Touchscreen Rear Entertainment

 

Thanks very much - I'll give it a go. I found a *similar* battery, although it didn't have the third wire, just + and -. It also produced two yellow flashing LEDs - and no amount of driving around would convince the remote to do anything else. I'll give your suggestion a try. If that doesn't work - the remote may just be knackered in some other way. I did see somebody had posted a very similar issue in 2011, but there were no replies.

Drat - just found that aliexpress won't ship that battery to the UK.

 

I noticed the were other aliexpress sellers so try searching for CS-RTE451SL. I also found a landrover part number for the battery AH42-19H516-AA & AH42-10C864-AA if that helps and try the landy forums for other user experiences as the remote was used in various LR vehicles.

 

See attached for OE battery information. I think the 3rd white wire is necessary as I believe it controls charging safety (thermistor). Also found a TSB incase it has any relevance to your remote.

Info from Varta

 

Remote maybe lost pairing? I think each remote need to be paired to the vehicle? (by SDD?)
I have absolute no real info, but i quess manufacturer donīt meant that somebody from vehicle next to you can control your displays...