Air condition stays on when car is off draining battery

That red light is on many vehicles and does not drain a battery that fast. You probably have another draw on the system. I recently had a car that the battery would go down in a few days, found out it was coming from the Onstar system malfunctioning.

Hi there:First suggestion, scanned the module in order to know faut codes, sometimes, replacement battery cause this conditions and just will need delete stored codes there.
Hope this helps.

Battery draining is from unnecessary current draw from module that do not sleep or glove box lights that stays on. Or even from a starter that has intermittent starter at times mimicing a drained battery,. To alternator diodes. And battery condition.The only solution for this is with a test light and a amp meter and a voltmeter,and doing voltage drop at the fuse box. This is the repair that a skilled technician can find

Your Alternator needs servicing/replacing.

It's physically impossible for anything in your car to work without the battery cables disconnected.
The blower could be shorted to ground / power, or the resistor block could be internally shorted.

Removal & Installation

Fig. 1: When installing the new heater core take great care not to bend or damage the fins or tubing
[IMG]http://i665.photobucket.com/albums/vv17/technovative/Isuzu-Pickup-Heater-Core.gif[/IMG]
Click here if image doesn't display.

1. Disconnect the negative battery cable.
2. Drain the engine coolant into a suitable container. CAUTION
   When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
   
3. Disconnect the heater hoses. Be careful not to damage the core by pulling on the hose to remove. Cut the hoses if they will not come off easily.
4. Remove the instrument panel.
5. Disconnect the resistor assembly.
6. If possible, disconnect and move the duct (non air conditioning) or the evaporator housing (air conditioning) to the right to gain clearance for the heater unit. If equipped with air conditioning, do not disconnect air conditioning system until absolutely necessary. Refer to Section 1 for discharging, evacuating and recharging the system.
7. Remove the instrument panel stay and heater unit.
8. Disassemble the heater unit by removing the duct, mode control case, core assembly and heater core. To install:
   
9. Assemble the heater unit by installing the duct, mode control case, core assembly and heater core.
10. Install the heater unit and instrument panel stay.
11. Connect the duct (non air conditioning) or the evaporator housing (air conditioning) to the heater unit. Evacuate and recharge the air conditioning system if the system was discharged to remove the evaporator assembly.
12. Connect the resistor assembly.
13. Install the instrument panel as outlined in this section.
14. Connect the heater hoses. Be careful not to damage the core by pulling on the hose.
15. Refill the engine coolant into a suitable container.
16. Connect the negative battery cable and check for leaks.

Maybe the refrigerant charge of r134a is low on pressure. Have that checked. I hope that the air conditioning tubing wasn't disturbed when all of that service was performed.

It really shouldn't have affected the a/c if they stayed away from that system.

1. Disconnect the negative (-) battery cable.
2. Drain the engine coolant into a suitable container.

CAUTION When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

1. Disconnect the heater hoses. Be careful not to damage the core by pulling on the hose to remove. Cut the hoses if they will not come off easily.
2. Remove the instrument panel.
3. Disconnect the resistor assembly.
4. If possible, disconnect and move the duct (non air conditioning) or the evaporator housing (air conditioning) to the right to gain clearance for the heater unit. If equipped with air conditioning, do not disconnect air conditioning system until absolutely necessary. Refer to for discharging, evacuating and recharging the system.
5. Remove the instrument panel stay and heater unit.
6. Disassemble the heater unit by removing the duct, mode control case, core assembly and heater core.

To install:

1. Assemble the heater unit by installing the duct, mode control case, core assembly and heater core.
2. Install the heater unit and instrument panel stay.
3. Connect the duct (non air conditioning) or the evaporator housing (air conditioning) to the heater unit. Evacuate and recharge the air conditioning system if the system was discharged to remove the evaporator assembly.
4. Connect the resistor assembly.
5. Install the instrument panel as outlined in this section.
6. Connect the heater hoses. Be careful not to damage the core by pulling on the hose.
7. Refill the engine coolant into a suitable container.
8. Connect the negative (-) battery cable and check for leaks.

NOTE: This procedure may be easier if the radiator and shroud is removed. If the radiator is not removed, place cardboard in front so not to damage the radiator core

1. Open the hood and disconnect the battery. Remove the lower engine cover.
2. Drain the cooling system. CAUTION
   When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
   
3. On cars without air conditioning, remove the fan.
4. On cars with air conditioning, remove the air pump and generator mounting bolts, then remove the fan and air pump drive belt (pivot the generator and air pump in toward the engine). Remove the fan and pulley with set plate. Remove the hoses to the pump.
5. Remove the 6 bolts attaching the water pump and remove the water pump assembly. Clean all gasket surfaces carefully. To install:
   
6. Install the 6 bolts attaching the water pump with a new gasket.
7. On cars with air conditioning, install the air pump and generator mounting bolts, then install the fan and air pump drive belt (pivot the generator and air pump in toward the engine). Install the fan and pulley with set plate. Install the hoses to the pump.
8. On cars without air conditioning, install the fan.
9. Refill the cooling system.
10. Connect the battery, start the engine and check for leaks.

folliottfami:I take you to mean that the blower just does not run. Your problem may have something to do with the motor being bad, or a wire or terminal between the relay/resistor and the motor breaking down and maybe burnt off. I can't say what is draining your battery though. Those problems usually stem from a light, such as the one in the glovebox, staying on.

Guest:: your problem may be similar. Inspect the wires and terminations in the area of the relay/resistor assembly.