2021 Nissan Altima Electrical Switch & Relay Parts

This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

UAC supplies both parts for the 2021 Nissan Altima. All of them fit every engine offered in the 2021 Altima.

Part numbers include UAC RE8417 and UAC RE8417C.

This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

5 Brake Light Switch parts are listed for the 2021 Nissan Altima, from DORMAN, HOLSTEIN, STANDARD MOTOR PRODUCTS and 2 other brands. STANDARD MOTOR PRODUCTS SLS542 carries the "Popular" badge. All of them fit every engine offered in the 2021 Altima.

In the Economy grade, DORMAN and HOLSTEIN supply 2 parts: the catalog's value-priced group. A representative part number is DORMAN 920479.

The Standard Replacement section lists 3 options from STANDARD MOTOR PRODUCTS, BECK/ARNLEY and ROSTRA — built to original-equipment specification. STANDARD MOTOR PRODUCTS SLS542 is listed in this group.

This group includes STANDARD MOTOR PRODUCTS SLS542, DORMAN 920479 and HOLSTEIN 2BLS0010 and the remaining parts above.

This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Dimmer Switch parts for the 2021 Nissan Altima come from WELLS. Every part fits both the 2.0L L4 Turbocharged and the 2.5L L4.

Part numbers include WELLS 1S17972 and WELLS 1S17973.

This table covers the Door Jamb switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Door Jamb Switch parts for the 2021 Nissan Altima come from 2 brands — ROSTRA and STANDARD MOTOR PRODUCTS. Every part fits both the 2.0L L4 Turbocharged and the 2.5L L4.

Part numbers include ROSTRA 651395 and STANDARD MOTOR PRODUCTS AW1098.

This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: WELLS 1S17973.

This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Headlamp Switch parts for the 2021 Nissan Altima come from WELLS. Every part fits both the 2.0L L4 Turbocharged and the 2.5L L4.

Part numbers include WELLS 1S17972 and WELLS 1S17973.

This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

3 Horn Relay parts for the 2021 Nissan Altima come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS. Every part fits both the 2.0L L4 Turbocharged and the 2.5L L4.

This group includes STANDARD MOTOR PRODUCTS HR159T, STANDARD MOTOR PRODUCTS HR159 and WELLS 1R1564.

This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: WELLS 1S17857.

This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch. Read more

3 Oil Pressure Sender / Switch parts are listed for the 2021 Nissan Altima, from GPD, HOLSTEIN and WELLS. All of them fit every engine offered in the 2021 Altima.

Listed part numbers: GPD 1815408, HOLSTEIN 2OPS0347 and WELLS 1S12021.

This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

3 Power Window Switch parts are listed for the 2021 Nissan Altima, from WELLS and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Altima.

Part numbers include STANDARD MOTOR PRODUCTS DWS2239, WELLS 1S15556 and WELLS 1S15545.

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Radiator Fan Relay parts for the 2021 Nissan Altima come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits both the 2.0L L4 Turbocharged and the 2.5L L4.

Listed part numbers: HOLSTEIN 2RSW0021 and STANDARD MOTOR PRODUCTS RY412.

This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

WELLS supplies both parts for the 2021 Nissan Altima. All of them fit every engine offered in the 2021 Altima.

This group includes WELLS 1S17972 and WELLS 1S17973.