Hi, I've been happily driving my L494 for the past 12 months without any issue, my only gripe was that on my wife's Evoque the handbrake comes on automatically when the ignition is turned off, on my L494 it doesn't, it does go off automatically when I select drive though. Did a little research on this and SDD and released there is a setting in car configuration file called 'key out apply' that can enable the function.

Here is where a little knowledge gets me in real trouble, I bought SDD v165 and a mongoose cable from eBay. Set up a battery maintainer and proceeded to follow the instructions to modify the CCF. I found the relevant setting changed it and all was going well until my battery maintainer tripped, at the point I was uploading the modified CCF. The result as others as stupid as me have posted is that my car is now completely unresponsive. The LCD is either blank, it sometimes display the Land Rover logo and the red handbrake symbol, but a push of the start button does nothing, a couple of times is sparked into life for a couple of seconds but then immediately shuts down.

I can still access via SDD it autofinds my VIN, some of the modules are resounding but critically the Gateway module isn't, I've tried the vehicle reset application, I've tried the immobilization application, I've tried taking removing the battery leads for a period but nothing. I've tried reinstalling the gateway module through SDD but it keeps failing, I'll add a few screen shots below. I've founds dozens of similar posts, but none that replicate my issue have posted any resolution.

I appreciate I may need to get it recovered to my local independent JRL, but any thoughts or suggestions of someone in Hertfordshire or local (or remote if it could be done online?) who might have the skills / equipment to fix, would be welcomed.

I may be able to help.

I suggest you dont try anything else with SDD until we have had time to discuss this further.

I will send you a private message but you may not be able to reply until you have more than 3 posts on this forum. So can you do a couple more in order to reach that 3 post threshold.

Hi Geoff thank you for reaching out, any help gratefully appreciated

Will check my messages now, thank you

Got some fantastic help from Mojo88 (over on the Jag forums) he came to my house diagnosed a faulty GWM, source a new one the same day, fitted and reconfigured me, excellent service for anyone is the same predicament as me, my cheap Chinese SDD and cable is now in the bin!

Moderators can this please be closed. Thank you

Don't close it. It perfectly highlights the perils of using cheap comms cables and hacked software

I thought the problem was that, at the critical moment, the battery maintainer tripped?
Sure a dodgy cable could cause issues, but that would, most likely, have stopped you much earlier in the process as it wouldn't have been able to competently communicate. You'd have corruptions and the tools would reject the connections.
Low voltage at a critical moment however, could cause a module to go offline whilst being updated - which would be catastrophic. 2021 L494 D300MHEV Autobiography
2019 Discovery Sport D180 HSE