2013 Ford C-MAX Hybrid Owner Manual Printing 3 - Page 294
2013 Ford C-MAX Hybrid Manual
Page 294 highlights
Maintenance 293 CHANGING THE LOW VOLTAGE BATTERY Your vehicle is equipped with a Motorcraft® maintenance-free low voltage battery which normally does not require additional water during its life of service. Note: See an authorized dealer for low voltage battery access, testing, or replacement. When a low voltage battery replacement is necessary, see an authorized dealer to replace the low voltage battery with a Ford recommended replacement low voltage battery that matches the electrical requirements of the vehicle. To ensure proper operation of the battery management system (BMS), do not allow a technician to connect any electrical device ground connection directly to the low voltage battery negative post. A connection at the low voltage battery negative post can cause inaccurate measurements of the battery condition and potential incorrect system operation. Note: If a person adds electrical or electronic accessories or components to the vehicle, the accessories or components may adversely affect the low voltage battery performance and durability and may also affect the performance of other electrical systems in the vehicle. Note: Always dispose of automotive batteries in a responsible manner. Follow your local authorized standards for disposal. Call your local authorized recycling center to find out more about recycling automotive batteries. Because your vehicle's engine is electronically-controlled by a computer, some engine control settings are maintained by power from the low voltage battery. Some engine computer settings, like the idle trim and fuel trim strategy, optimize the driveability and performance of the engine. Some other computer settings, like the clock and radio station presets, are also maintained in memory by power from the low voltage battery. When a technician disconnects and connects the low voltage battery, these settings are erased. Complete the following procedure in order to restore the settings: 1. With the vehicle at a complete stop, set the parking brake. 2. Shift the transmission to P (Park). 3. Turn off all accessories. 4. Step on the brake pedal and start the vehicle. 5. Step on the accelerator to start the engine. 2013 C-Max Full Hybrid (34h) Owners Guide gf, 3rd Printing, January 2013 USA (fus)