Land Rover Discovery 2 - Alarm and Transmission Mode Lights Flashing ("Limp Mode") Fix

Quick diagnosis and fix for a common issue for Discovery 2. When trying to start, sometimes the anti-theft system would trigger and disable the vehicle. If the vehicle did start (with or without a jump) the transmission mode lights (M and S) flash.

When the transmission mode lights flash, when it’s in drive, the shift indicator will flash. The vehicle will only go forward in 3rd gear and you’ll notice sluggish starts and high RPM at higher speeds. The transmission ECM usually triggers this type of warning light.

Here's the link to the battery pack. I ALWAYS keep one of these in every car, especially the Disco. Nothing's worse than driving on the beach, tides coming in, and the battery is dead!

https://amzn.to/3AxPJ9e

Disclaimer: The above link is an affiliate link; I do get commissions on sales through that link.