If you are trying to get to the blower switch because there is only one speed on the switch which is high, the problem is not the switch. It's the resistor in the blower motor and is ususally accessable in the passenger side floor. At least on my 92 that's where it was. You take out the two bolts, unplug the resistor plug in the new one and the process is done.
In a 2004 Nissan Sentra, the blower motor resistor is typically located under the dashboard on the passenger side. It can be found near the blower motor itself, often mounted to the HVAC housing. To access it, you may need to remove the glove compartment and some panels for better visibility and access.
In a 2007 Nissan Sentra, the blower motor is located inside the passenger compartment, behind the dashboard. To access it, you'll typically need to remove the lower dash panel on the passenger side. The blower motor is mounted to the HVAC housing and is responsible for circulating air through the vehicle's heating and air conditioning system.
The 1999 Nissan Sentra has a blower resistor in the air vents. This mechanism regulates the amount of air entering the cabin.
AnswerIt's located in the dash behind the passenger airbag assembly. Remove the glovebox to access it. THE BLOWER ASSEMBLY IS LOCATED UNDER THE DASH AREA WITHIN THE CONSOLE COVERAT THE FLOORBOARD AREA. THE BLOWER HOUSING SHOULD BE REMOVED WHERE THE BLOWER CAN BE REMOVED.
They are generally found close to the blower motor.
The Nissan blower motor can be found in the engine compartment on the firewall. The blower motor will be on the passenger side of the firewall.
Defective blower motor resistor pack.
to the right of the gas peddal
You need to replace the blower motor resistor located near the glove box.
A bad control switch can cause your 2003 Nissan Sentra heater blower to stay on. The motor or a bad sensor can also cause the heather not to work properly.
More than likely the blower motor speed resistor burned out.
Blower resistor switch