Hi, just joined this forum having looked around various links and found this one to be really useful when trying to work through Lexus problems. Working with my son on two 1995 LS400s (Mk2 - N plates) and have had to do a battery swap out on both. One starts fine but the other doesn't want to turn over (security light on with four-way indicators flashing). The electrics work when I turn the key (seats/windows etc) so I know the battery connection is fine but I've heard that you need to reset the car security system? Nothing in the owners manual about how to do this so looking for some wise words to get the car back on the road.
Thanks in advance.