Service Tools & Reset keys

About Service Tools & Reset keys

Service tools and reset keys are essential diagnostic devices for automotive technicians, mobile mechanics and vehicle enthusiasts working on modern computer-controlled vehicles. This specialist equipment enables you to read diagnostic trouble codes, maintain electronic memory during battery replacement, and reset service indicators without losing stored vehicle settings or requiring expensive dealer intervention. MyToolShed.co.uk stocks trusted brands including Sealey and Draper, offering EOBD code readers and memory savers compatible with the standardised European On-Board Diagnostics system fitted to petrol vehicles from 2001 and diesel vehicles from 2004 onwards.

Memory savers are particularly valuable when replacing batteries or conducting electrical repairs, as they maintain continuous power to electronic control units (ECUs), preserving radio codes, seat positions, window calibrations and other critical settings. EOBD code readers allow quick identification of fault codes through the vehicle's 16-pin diagnostic socket, typically located under the dashboard, enabling efficient diagnosis without costly dealer equipment. Whether you're a professional workshop technician or a skilled DIY enthusiast, these tools provide dealer-level functionality at a fraction of the cost.

Applications

• Mobile Mechanics – conducting roadside diagnostics and repairs without dealer-level equipment
• Independent Garages – providing affordable diagnostic services across multiple vehicle makes and models
• Auto Electricians – protecting electronic systems during electrical repairs and modifications
• MOT Testing Stations – diagnosing emissions-related faults and service requirements
• Fleet Maintenance Teams – managing preventative maintenance and service schedules for company vehicles
• Vehicle Body Shops – maintaining electrical system integrity during bodywork and repairs
• Car Enthusiasts and DIYers – maintaining personal vehicles and diagnosing issues independently
• Recovery Services – identifying breakdown causes at roadside before vehicle recovery

Choosing The Right Service Tools & Reset keys

Vehicle Compatibility: Verify the tool covers EOBD/OBD-II systems on the vehicles you'll service. Whilst EOBD is standardised across European vehicles, some tools offer manufacturer-specific functions beneficial for specialist applications.

Functionality Level: Basic code readers identify fault codes, whilst advanced devices offer live data streaming and code-clearing capabilities. Memory savers connect via the diagnostic socket, cigarette lighter or battery terminals depending on the model.

Power Source: Memory-saving devices typically use 9V batteries (providing 30-60 minutes operation) or mains adapters (suitable for extended repairs). Consider which power source suits your typical working duration and environment.

Display Quality: Choose code readers with clear backlit displays for working in poorly-lit areas under dashboards. Professional workshops may benefit from PC connectivity for maintaining service records.

Build Quality: Professional-grade tools from manufacturers like Sealey and Draper available at MyToolShed.co.uk offer the reliability and longevity essential for daily workshop use in demanding garage environments.

Safety Information

Always switch off the ignition before connecting diagnostic equipment unless specifically instructed otherwise. Never disconnect a vehicle battery with the engine running, as this can cause severe alternator and ECU damage. When using memory savers, ensure stable voltage within the specified range – incorrect voltage can damage sensitive electronic systems. Use diagnostic equipment in well-ventilated areas away from potential ignition sources, particularly when working on fuel systems. After reconnecting the main battery, verify all systems are functioning correctly, as memory savers alone cannot guarantee retention of all critical safety system settings.

Frequently Asked Questions

Will a memory saver work on my vehicle?

Memory savers are compatible with most EOBD-equipped vehicles – petrol models from 2001 onwards and diesel from 2004 onwards. They maintain power through the diagnostic socket or directly to the electrical system, preserving radio codes and stored settings during battery replacement. Check your vehicle handbook to confirm EOBD socket location and compatibility.

Can I clear the engine management light with a code reader?

Code readers can clear diagnostic trouble codes and extinguish warning lights, but only after repairing the underlying fault. Simply clearing codes without fixing the problem will cause the light to return and may prevent identification of serious issues that could result in vehicle damage or MOT failure.

How long can the battery remain disconnected with a memory saver fitted?

Battery-powered memory savers using 9V batteries typically provide 30-60 minutes of power – adequate for most battery changes. Mains-powered devices can maintain power indefinitely, making them suitable for extended electrical repairs or overnight work.