1994 toyota 4 runner rear heater

[DAVE7695]

the rear heater on my 4 runner is no longer working not hot air at all only cold.. Front is working fine

[OzzyO]

Check under your 4runner and make sure there is coolant in the lines going to your back heater. This is also connected to your radiator so check to see if your coolant is down in your radiator. No coolant and you could lose your engine .

Good Luck
OzzyO

[4Wheel]

Check your coolant levels and burp the system if it was low.
The coolant for the rear heater is tapped off the highest point of the system.