Oxygen System Servicing; Key Fob Battery Replacement - Cirrus SR22 Pilot Operating Handbook

Cirrus Design
SR22
Battery #2 is a maintenance-free, rechargeable, sealed, lead acid
battery. Mounted in the empennage just aft of bulkhead 222, there is
no need to check the specific gravity of the electrolyte or add water to
these batteries during their service life. Refer to the AMM for Overhaul
and Replacement Schedule.
The external power receptacle is located on the left side of the
fuselage just aft of the firewall. Refer to the AMM for battery servicing
procedures.

Oxygen System Servicing

To preclude the possibility of fire by spontaneous combustion,
oil, grease, paint, hydraulic fluid, and other flammable material
should be kept away from oxygen equipment.
Service the oxygen system per the appropriate revision of the Precise
Flight Instructions for Continued Airworthiness for the Cirrus SR22/
SR22T Built-In Oxygen System, STC number SA01708SE, document
number 102NPMAN0003.

Key Fob Battery Replacement

Serials 4300 & subs w/ Convenience Lighting:
If the key fob does not function properly at normal range, the battery
should be replaced. To replace the key fob battery:
1. Using a thin flat object, pry the top and bottom halves of the key
fob apart.
2. Remove and replace the battery with a new CR2032, or
equivalent, 3-volt battery. Install the new battery with the positive
side (+) facing up, away from the circuit board.
3. Press the top and bottom halves of the key fob back together.
P/N 13772-004 P/N 13772-004
Revision 1
• Caution •
Section 8
Handling and Servicing
8-23 8-23