The 75 and ZT Owners Club Forums - View Single Post

trebor · 3rd October 2019, 20:45

The GSM units have 2 relays, when you send a text relay 1 switches on the FBH. If it is programmed correctly relay 2 will come on after 5 minutes and switch on the ATC in the car but yes the ATC has to be left on when you switch the ignition off on the previous occasion the car was used

Additional wiring back to the ATC is needed and there is a how to on this forum which gives the detail.

One word of warning is that some of the early GSM units sold by the seller who supplied quite a few to members on here were faulty and relay 2 did not work so that is always a possibility to consider, which can be overcome by using a timer relay.

3rd October 2019, 20:45	#7
trebor This is my second home Rover 75 CDTi Connoisseur SE & MG ZT Saloon 190 Join Date: Jun 2007 Location: Coven Posts: 12,523 Thanks: 526 Thanked 1,877 Times in 885 Posts	The GSM units have 2 relays, when you send a text relay 1 switches on the FBH. If it is programmed correctly relay 2 will come on after 5 minutes and switch on the ATC in the car but yes the ATC has to be left on when you switch the ignition off on the previous occasion the car was used Additional wiring back to the ATC is needed and there is a how to on this forum which gives the detail. One word of warning is that some of the early GSM units sold by the seller who supplied quite a few to members on here were faulty and relay 2 did not work so that is always a possibility to consider, which can be overcome by using a timer relay. __________________ www.midlandsnanomeets.co.uk Robs Car Gallery Coven near Wolverhampton WV9 2000 Cowley Built Rover 75 2.0 V6 Club SE/ Atlantic Blue/ Sandstone/Walnut (daily driver) 2003 Land Rover Freelander 1 TD4 HSE Helsinki Blue/Black Leather (swmbo daily driver)