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27th February 2012, 22:22 | #1 |
Premium Trader
75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007
Location: Liversedge, West Yorkshire
Posts: 5,416
Thanks: 1,105
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WARNING - Failed Battery and Key Codes
WARNING This applies to all Rover 75 and ZT models. DO NOT continue to try and start the car with a failing battery. There is a possibility for the transponder chip in the key to become corrupted as it can scramble the rolling code with that stored in the immobiliser. The engine disabled icon will display on the instument pack and you will no longer be able to start the car using that key. To reduce the risk of this happening the best course of action is that if your car will not start as normal and the headlamps start to flash Don't continue to make attempts to start the car until you have charged the battery or replaced it if the battery has failed. However should you be unfortunate and find that this has happened then any of the club members who offer the replacement key service should be able to re-sync the key with the immobiliser. Russ Live thread here
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Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and "160", Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. Last edited by Dragrad; 21st July 2012 at 22:56.. |
27th February 2012, 22:36 | #2 |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
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WARNING - Failed Battery and Key Codes
Hi as Russ has pointed out, this is a very real issue with the immobiliser system on our cars.
This is the third time we have encountered this problem, firstly on my own new car, where it had been incorrectly diagnosed as needing a new ecu, secondly here http://www.the75andztclub.co.uk/foru...d.php?t=105390 , and one of Russ's customers last Sunday. There is information relating to this problem in BMW circles, whereupon the only known cure was to order a new key, however as Russ says, we are able to rescue "scrambled" keys, however the EWS immobiliser would require removal from the car for reprogramming. Brian |
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