Description
The plugpal Autowatch 160 Diagnostic Plug provides a simple way to bypass the immobiliser on compatible Autowatch alarm systems. It helps you diagnose whether the immobiliser could be causing an electrical or starting problem.
This diagnostic plug works with the Autowatch 160, 171, 172, 188, 236, 239 and 433 alarm systems. These systems were fitted as aftermarket alarm and immobiliser systems to many cars.
The plugpal diagnostic plug does not bypass the alarm itself. The alarm continues to operate normally. Instead, the plug bypasses the immobiliser function, allowing you to test the vehicle and determine whether the immobiliser contributes to the fault.
Diagnose Autowatch Immobiliser Problems
Aftermarket immobilisers can develop faults as they age. An ageing immobiliser may become intermittent or behave unpredictably. It can also contribute to electrical problems such as parasitic battery drain.
The plugpal Autowatch 160 Diagnostic Plug lets you remove the immobiliser from the diagnostic process without disabling the alarm.
This can help you investigate problems such as:
- Parasitic battery drain
- Intermittent immobiliser faults
- An ageing or erratic immobiliser
- Starting problems
- Electrical problems linked to the immobiliser
- Whether the fault comes from the immobiliser or the vehicle
Bypassing the immobiliser for diagnostic purposes can help you identify the source of a problem before replacing components or carrying out further electrical work.
The Alarm Continues to Work
An important feature of this diagnostic plug is that it only bypasses the immobiliser.
The Autowatch alarm remains operational. This allows you to test the vehicle while keeping the alarm system active.
This differs from some alarm bypass plugs that disable the complete alarm system. The plugpal Autowatch 160 Diagnostic Plug focuses specifically on isolating the immobiliser as part of the fault-finding process.
Compatible Autowatch Alarm Systems
The plugpal Autowatch 160 Diagnostic Plug is designed for use with the following Autowatch systems:
- Autowatch 160
- Autowatch 171
- Autowatch 172
- Autowatch 188
- Autowatch 236
- Autowatch 239
- Autowatch 433
These Autowatch systems have been used as aftermarket alarm and immobiliser installations on many different vehicles.
Please check your vehicle and Autowatch system before ordering to confirm compatibility.
Quality Construction for Automotive Use
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 in connections exposed to vibration and movement within an automotive environment.
We also protect the electrical connections with adhesive-lined heat-shrink tubing. This provides additional protection against moisture and helps create a durable connection.
A Simple Automotive Diagnostic Aid
The plugpal Autowatch 160 Diagnostic Plug provides a straightforward way to isolate the immobiliser when investigating a vehicle fault.
It can help determine whether an Autowatch immobiliser contributes to:
- Battery drain
- Starting difficulties
- Intermittent electrical faults
- Erratic immobiliser operation
Using the diagnostic plug can help narrow down the cause of a problem before you replace the immobiliser or investigate other parts of the vehicle’s electrical system.












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