Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B1004: Keep Alive Memory: Description
Modules contain a data storage area which can save pertinent data when ignition switch is turned to OFF position. Keep Alive Memory (KAM) data is lost if battery power is removed from module. KAM area is an integral part of a control module microprocessor and cannot be serviced separately. Control module will operate from preset critical operating data until new data is learned and stored in KAM.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.