Removing battery for long period
If I were to remove the battery from my Land Rover LR2 for over a year. Would I have issues with the car computer after reinstalling the battery a year + later?

Land Rover dropped a trim level for its 2009 LR2, abandoning the base SE model and going with only the HSE. But there’s so much to like about the LR2 HSE – Land Rover’s signature off-road capabilities, smooth on-road handling, a refined cabin – the SE will hardly be missed.
The ’09 LR2 comes with an inline six-cylinder (I6), 230-hp, 3.2-liter engine capable of 234 lb-ft of torque at 2,300 rpm. That torque is delivered as needed to the four standard 235/55AT tires by Permanent Intelligent All-Wheel Drive that begins working upon ignition. The I6 is mated to a six-speed automatic transmission that can be changed – on the fly if needed - between Normal, Sport (holds gear longer), or Command Shift (manual shifting) modes. Maximum towing capacity is 3,500 pounds. The LR2 takes premium unleaded and gets 15/22 mpg.
Hardcore off-road enthusiasts might be disappointed by the lack of a low-speed transfer case, but unless you’re tackling major boulders, Land Rover’s Terrain Response system should handle all other off-road needs. The system can be set to General, Grass/Gravel/Snow, Mud and Ruts, or Sand. Plus, the LR2 has generous angles to help transition from flats to hills (29 ascent/32 descent), Hill Descent Control, and Gradient Release Control for further control on descents, and a 19.7-inch wading depth.
The LR2’s cushy suspension, solid structure, Dynamic Stability Control, and Roll Stability Control all combine to provide a comfortable on-pavement ride. Reviewers tend to agree that the LR2 handles as smoothly as any SUV in its class and certainly feels more stable than Land Rover’s old Discovery.
The front seats provide ample room even for larger adults. The steering wheel has a myriad of adjustment options, and the driver’s seat is 8-way adjustable, so finding a comfortable driving position should be easy. Three large adults might find a long trip in the back seat a bit cozy. The rear seats can fold completely flat to offer 58.9 cubic feet of cargo space, or they can fold in a 60/40 split.
High-quality wood and leather trim, solid-plastic and eye-pleasing yet ergonomic control design give the LR2’s interior a luxurious feel that many have come to expect from Land Rover. Amenities include a nine-speaker Alpine audio system with a 6-CD changer, dual-climate control, and a push-button starter.
The power-assisted, four-wheel ventilated disc brakes are just the start of the LR2’s safety features. There’s also the four-channel, all-terrain, antilock brake system, electronic brakeforce distribution, Emergency Brake Assist, and Cornering Brake Control. And if those brakes don’t keep you out of a collision, the LR2 has a seven-airbag Supplemental Restraint System, side-door impact beams in the front and rear, integrated head restraints in the front and rear, front crumple zones, and a collapsible steering column.
If I were to remove the battery from my Land Rover LR2 for over a year. Would I have issues with the car computer after reinstalling the battery a year + later?
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Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Driver knee airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: diversity · Auxiliary audio input: jack · 6 disc in-dash CD · Premium Brand: Alpine · AM/FM radio · Rear audio: rear volume control · Satellite Radio: Sirius ready · Surround audio: 7.1 · Total Number of Speakers: 9 · 320 watts
Brakes
ABS: 4-wheel · Front brake diameter: 12.5 · Front brakes: ventilated disc · Rear brake diameter: 12.0 · Rear brakes: ventilated disc
Comfort Features
Dash trim: wood · Floor Mat Material: carpet · Floor Material: carpet · Floor Mats: front · Shift knob trim: alloy · Steering wheel trim: leather
Convenience Features
Cargo area power outlet: 12V · Cargo cover: retractable · Center console: front console with storage · Cupholders: rear · Dimming rearview mirror: auto-dimming · Memorized settings: side mirrors · Multi-function remote: keyless entry · One-touch windows: 4 · Power outlet(s): 12V front · Rear power outlet: 12V · Steering wheel: tilt and telescopic · Steering wheel mounted controls: audio · Storage: front seatback · Vanity mirrors: dual illuminating
Driver Seat
Adjustable lumbar support: power · Power adjustments: 8
Drivetrain
4WD Type: full time · Axle ratio: 3.75 · Limited slip differential: center
Exterior Features
Door handle color: black · Exhaust: dual exhaust tips · Front bumper color: body-color · Grille color: chrome · Mirror color: black · Paint: special factory paint · Rear bumper color: body-color · Rear spoiler color: body-color · Rear trunk/liftgate: liftgate
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 3
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: Xenon
Mirrors
Exterior mirrors: power
Passenger Seat
Power adjustments: 6
Rear Seats
Type: 60-40 split bench
Roof
Moonroof: power panoramic
Safety
Child seat anchors: LATCH system · Crumple zones: rear · Parking sensors: rear
Seatbelts
Rear center seatbelt: 3-point · Seatbelt pretensioners: front
Seats
Driver seat power adjustments: height · Front seat type: bucket · Heated: front seats · Rear seat folding: split · Upholstery: leather
Spare Tire
Mount Location: underbody · Size: temporary
Spare Wheel
Rim Type: steel
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Leveling: self leveling suspension · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): front
Telematics
Navigation system: DVD navigation system · Phone: pre-wired for phone · Phone wireless data link: Bluetooth
Tires and Rims
Wheel type: aluminum alloy · Wheels: chrome alloy
Windows
Front wipers: variable intermittent · Liftgate window: fixed · Rear wiper: with washer