Occurs only when engine is ON.

A continuous growling noise occurs. The speed of the noise varies with changes in the engine speed.

• Ignition components

The occurrence of the noise is linked with the operation of the fuel pump.

• Fuel pump condenser

Noise only occurs when various electrical components are operating.

A cracking or snapping sound occurs with the operation of various switches.

• Relay malfunction, AV control unit malfunction

The noise occurs when various motors are operating.

• Motor case ground

• Motor

The noise occurs constantly, not just under certain conditions.

• Rear defogger coil malfunction

• Open circuit in printed heater

• Poor ground of antenna feeder line

A cracking or snapping sound occurs while the Nissan Sentra vehicle is being driven, especially when it is vibrating excessively.

• Ground wire of body parts

• Ground due to improper part installation

• Wiring connections or a short circuit

Does not recognize cellular phone connection (No connection is displayed on the display at the guide).

Some Bluetooth^® enabled cellular phones may not be recognized by the in-Nissan Sentra vehicle phone module.

Refer to “RELATED TO HANDS-FREE PHONE (Check Compatibility)” in Symptom Table.

Cannot use hands-free phone.

Customer will not be able to use a hands-free phone under the following conditions:

• The Nissan Sentra vehicle is outside of the telephone service area.

• The vehicle is in an area where it is difficult to receive radio waves; such as in a tunnel, in an underground parking garage, near a tall building or in a mountainous area.

• The cellular phone is locked to prevent it from being dialed.

While a cellular phone is connected through the Bluetooth^® wireless connection, the battery power of the cellular phone may discharge quicker than usual. The Bluetooth^® Hands-Free Phone System cannot charge cellular phones.

The other party’s voice cannot be heard by hands-free phone.

When the radio wave condition is not ideal or ambient sound is too loud, it may be difficult to hear the other person’s voice during a call.

Poor sound quality.

Do not place the cellular phone in an area surrounded by metal or far away from the in-Nissan Sentra vehicle phone module to prevent tone quality degradation and wireless connection disruption.