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Lotus in the Peak
28th - 30th June 2024

Can't Stop The Engine !


rocketian

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I have been fiddling with the interior light on the Elise and maybe managed to short it.  At the same time I lost the remote locking.  Today I drove it and had no instruments - no rev counter, no speedo and nothing on the LCD fuel/temp panel.  But all the warning lights and engine start button flash with the indicators - which work normally - and the alarm/rev warning light is on all the time.

 

Had a look at the main fuse box.  Fuse 11 (alarm power/interior lamp) and fuse 8 (battery services) both blown.

 

Replaced those and low and behold everything came back ( except remote central locking - it still locks from the button by the gear lever but not from the key fob). 

 

However - I can't turn the engine off - the only way to stop it is to stall it, or pull fuse 11, and when I replace the fuse the warning lights stay on just as if the ign was still on.

 

I have now disconnected the battery - that got the lights off !

 

OK - any ideas anyone !

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Check you have the interior light wires in correct place. IIRC you get the same on early Elises with the cigarette lighter wired incorrectly.

On early S1s that was true but you don't get any of the other symptoms described.

Not familiar enough with S2 wiring to even know where to start with this one...

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Isn't there one of the silver relays which causes this when it gets stuck / fails?

 

That sounds feasible. The excess current welding the contacts together? Get it to the fault situation and pull the relays one at a time and see if it cuts out?

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That sounds feasible. The excess current welding the contacts together? Get it to the fault situation and pull the relays one at a time and see if it cuts out?

 

And if that does "fix it" try and swap it with another relay with the same rating. That way you will probably see the lights or horn stay on, and be 100% confident that is the problem.

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Latest status - If I pull out fuse 11 (Alarm Power and int lamp) everything seems to be fine - engine starts an stops properly, instruments all work normally - just no remote locking and presumably no interior light

 

Not sure where the "silver relays"  that Steve mentioned are - there a couple of black ones near the fuse box.

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Sounds more like an alarm/immobiliser problem to me......

 

What bulb did you go for in the end? LED?

I bought some 12v LEDs on a strip from Maplins. They come on a roll in 5cm segs each with 3 LEDS http://www.maplin.co.uk/p/white-12v-5cm-led-strip-n87cz

 

I think you are right about it being an immobiliser problem as it shares a fuse with the interior light.  It is the Alarm fuse I have removed to make the car work again.  Possibly fried the board and left it in a permanently "On" configuration.

 

Incidentally I bought a new interior light now - haven't fitted it yet.  It had a Peugeot logo on the back so I went to them.  If I had realised the whole unit was only £10.50 I wouldn't have bothered to try and modify the old one.

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I bought some 12v LEDs on a strip from Maplins. They come on a roll in 5cm segs each with 3 LEDS http://www.maplin.co.uk/p/white-12v-5cm-led-strip-n87cz

 

I think you are right about it being an immobiliser problem as it shares a fuse with the interior light.  It is the Alarm fuse I have removed to make the car work again.  Possibly fried the board and left it in a permanently "On" configuration.

 

Incidentally I bought a new interior light now - haven't fitted it yet.  It had a Peugeot logo on the back so I went to them.  If I had realised the whole unit was only £10.50 I wouldn't have bothered to try and modify the old one.

 

 

:(

 

 

Fingers crossed you get it all sorted.

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Hopefully you'll be able to see something that has been fried, with a bit of searching!

I bought some 12v LEDs on a strip from Maplins. They come on a roll in 5cm segs each with 3 LEDS http://www.maplin.co.uk/p/white-12v-5cm-led-strip-n87cz

 

 

TBH I don't really think it's worth messing about when you can use these?  *linky* (have them in the Esprit & Defender).

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Hopefully you'll be able to see something that has been fried, with a bit of searching!

TBH I don't really think it's worth messing about when you can use these?  *linky* (have them in the Esprit & Defender).

Yes, you are quite right - I wont mess around again !  The bulb in your link is not the right type, mine is shaped like a normal light bulb with both the contacts in the base - but I am sure there is an equivalent somewhere.  and the problem was not with the bulb, but the holder.

 

Still got to sort out the alarm and remote locking - so not out of the woods yet

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Latest

 

I fitted a new interior light unit (£10:50 it is a Peurgeout part) and surprisingly it worked even though the fuse was out.  After a few miles I turned the engine off and got a continuous alarm (like when you leave the head lights on) until I took the key out - and the light didn't work any more.

 

So to recap

with the "alarm/interior light" fuse out, everything works except the alarm, int light and remote locking.  With the fuse in lots of problems - no instruments, can't stop the engine etc.

 

My feeling is that the problem is with the central locking module (CDL).  This module is £80, before I order one, does anyone know where it is from and if there is a cheaper equivalent - I have heard it is a GM or SAAB unit ????

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