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by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Jul 2020
Posts: 40
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2020
Posts: 40 |
Has anyone experienced the Inertia Switch Warning Light suddenly for no reason illuminating but not causing a problem but will not extinguish until eventually timing out after removing the ignition key.Is this another quirky happening with the Aero
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Joined: Mar 2009
Posts: 11,532 Likes: 318
Smile, it confuses them Member of the Inner Circle
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Smile, it confuses them Member of the Inner Circle
Joined: Mar 2009
Posts: 11,532 Likes: 318 |
Which one is the Inertia Switch Warning Light ?
Everyone loves a Morgan. Even me, unless it's broken again.
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Joined: Apr 2016
Posts: 1,079 Likes: 71
Has a lot to Say!
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Has a lot to Say!
Joined: Apr 2016
Posts: 1,079 Likes: 71 |
If I understand it correctly the inertia switch cuts the fuel pump in the event of a collision or roll over. If your engine was running normally during this anomaly, then likely to be just another Aero electrical gremlin.
I've had the similar with the handbrake and seatbelt warning lights too.
David
Aero S4
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Joined: Mar 2007
Posts: 2,050 Likes: 12
Sir S1'a'lot Talk Morgan Expert
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Sir S1'a'lot Talk Morgan Expert
Joined: Mar 2007
Posts: 2,050 Likes: 12 |
My inertia light is on quite often. Mind if it’s own
Series 1 though
2002 Aero 8 S1
2023 Plus 4 (woman’s)
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Joined: Mar 2021
Posts: 535 Likes: 1
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2021
Posts: 535 Likes: 1 |
That's bound to be the integration of BMW CanBus in to Morgan wiring 
Cheers, Paul
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Joined: Jul 2020
Posts: 40
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2020
Posts: 40 |
its the exclamation mark ! warning light that comes on the dashboard
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Joined: Jul 2020
Posts: 40
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2020
Posts: 40 |
Thanks for your replies must be a gremlin. I tried pressing the inertia switch to perhaps reset things but what happens is that the car is totally isolated with electric power which is what would happen in a collision and you have to physically reset the mechanical switch to restore power, but the light is still on unfortunately.
Last edited by Simon m wright; 27/01/22 08:56 PM.
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Joined: Jul 2007
Posts: 3,838 Likes: 9
le Asbo du Bling Talk Morgan Addict
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le Asbo du Bling Talk Morgan Addict
Joined: Jul 2007
Posts: 3,838 Likes: 9 |
Simon have you tried the reset button. This should clear the fault that's turning on the light?
Slowly going green
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Joined: Mar 2021
Posts: 535 Likes: 1
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2021
Posts: 535 Likes: 1 |
If you have one of those OBD port diagnostic tools you may be able to clear the fault code from the ECU that way and the light would then go out.
Cheers, Paul
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Joined: Feb 2016
Posts: 8,683 Likes: 413
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,683 Likes: 413 |
Thanks for your replies must be a gremlin. I tried pressing the inertia switch to perhaps reset things but what happens is that the car is totally isolated with electric power which is what would happen in a collision and you have to physically reset the mechanical switch to restore power, but the light is still on unfortunately. Have you tried tripping the circuit breaker on the front of electrics box. I know some owners use this to save the horrendous battery drain when car laid up for more than a few days. Apologies if that is what you meant by mechanical switch.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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