The plugpal Lotus Elise Cobra Diagnostic Plug (A111M0123S) provides a simple way to bypass the immobiliser on compatible Lotus vehicles. It helps you diagnose whether the immobiliser could be causing an electrical or starting problem.
This diagnostic plug is designed for immobiliser systems found in the Series 1 Lotus Elise and Lotus Exige. Lotus also used the same type of system on some early Series 2 Elise models with the K Series engine and Meta immobiliser system.
The immobiliser system also appeared in many other vehicles. Please check your vehicle and immobiliser system before ordering to confirm compatibility.
Ageing immobilisers can develop electrical faults or become unreliable. An intermittent immobiliser can cause starting problems and other difficult-to-trace electrical issues.
The plugpal Lotus Elise Cobra Diagnostic Plug allows you to isolate the immobiliser as part of the diagnostic process.
It can help you investigate problems such as:
This provides a useful first step when troubleshooting an older Lotus with an unreliable immobiliser system.
The plugpal diagnostic plug does not bypass the alarm itself. It only bypasses the immobiliser.
The alarm therefore continues to operate normally. This allows you to test the vehicle with the immobiliser removed from the circuit while retaining the alarm function.
This makes the plug particularly useful when you need to establish whether an immobiliser fault is responsible for a problem with the vehicle.
On the Series 1 Lotus Elise and Lotus Exige, the immobiliser sits at the rear left-hand side of the engine bay.
You will find it beneath a plastic cover on the ECU mounting plate. To use the diagnostic plug, disconnect the immobiliser and connect the plugpal diagnostic plug to the vehicle loom.
The installation is straightforward and does not require you to modify the vehicle wiring.
Some early Series 2 Lotus Elise models with the K Series engine use the Meta immobiliser system.
On these vehicles, the immobiliser module sits behind the passenger-side speaker panel.
Because Lotus used different immobiliser systems across different models and production years, you should check the system fitted to your vehicle before ordering.
The Cobra and Meta immobiliser systems used by Lotus also appeared in other vehicles. Model names alone may therefore not be enough to confirm compatibility.
Before ordering, check:
If you are unsure which immobiliser system your vehicle uses, please check before purchasing.
Like all plugpal products, we assemble this diagnostic plug using quality components.
We crimp the electrical connections rather than soldering them. This helps reduce the risk of stress fractures caused by vibration and movement in an automotive environment.
We also protect the connections with adhesive-lined heat-shrink tubing. This helps protect the electrical connections from moisture and provides a durable finish.
The plugpal Lotus Elise Cobra Diagnostic Plug provides a practical way to isolate the immobiliser when investigating faults.
It can help you determine whether the immobiliser contributes to:
By isolating the immobiliser, you can narrow down the source of a fault before replacing expensive components or carrying out further electrical work.
Whether you own a Series 1 Lotus Elise, Lotus Exige or compatible early Series 2 Elise, this diagnostic plug provides a useful tool for investigating ageing immobiliser systems.