Sec Code Ls400 1996 Model

[v8rick]

hi all i wondered if someone could help me here i accidently left the side lights on over the weekend on my 1996 ls400 and the Battery went completely flat , i trickle charged the Battery over an 18hr period and everthing is ok with the exception of the radio , all i have is the word sec on the display when i bought the car 6 mths ago the previous owner gave me a radio code so i followed the owners manual instruction for entering this , press the top of the seek switch/ button and at the same time press 1 and up came 3 --- so i followed the instructions to enter the code and, nothing after around 30 seconds it returns to ---

as if its the wrong code , am i missing something here or is this actually the wrong code , i did repeat the operation several time but still nothing just returns to --- any help will be gratefully recieved thanks.

rick.

[steve2006]

Hi,

There was a similar post on the forum recently apparently the number is the last 3 digits of the VIN number so might be worth checking to confirm the code.

[ontheroad1]

so you have the manual if so you were reading page 117? to get SEC back on ( which means security ) press the power button in keep it in and hold button 1 and 6 this will reset it then you can try again,

as Steve says the last 3 digits of the VIN are used in most cases but if its been altered then you will have to take the radio into a place that can access the CMOS and get the code out cost is approx £25 ( don't take it to the dealers ) they send it away and you could add many £££££££ to the bill

[v8rick]

thanks for your prompt reply guys and yes i have read those replies , and i shall try the vin number code when i get to work in the morning .

i think that the code has been changed as i said in my post the guy i got the car from gave me an email with the code on it as 132 , do i need to do this reset procedure before trying to enter this code ? thanks.

rick.

[ontheroad1]

you do need to do the reset thingy so the SEC is on and not - - - then its like starting all over again

[v8rick]

thanks all its sorted now the code i was useing was the right one it was just me who was not pressing the right button after entering it cheers anyway

rick.

[lloydis]

So Rick, was it the last three numbers of the VIN? Need to work on my 95 LS400 and do not have a radio code anywhere? Thanks

[Spottedlaurel]

Can the need to input a code be over-ridden? When I got my '96 Mk3 back in October the Battery had been flat for some time and I had to put another one on. Since then I've disconnected the Battery several times for various reasons and not once has it asked me to enter a code.

[Mybikes a cx500]

I think the Battery has to be disconnected for a while before the code is required. There is also a process for removing the code entirely, seen it on here somewhere in the past, used it myself