The 2018 Nissan Maxima has 47 electrical switch & relay parts with verified fitment on this page — 17 part types and 11 brands, covering the 3.5L V6 engine. Each part includes a manufacturer part number and application notes.
On the 2018 Nissan Maxima, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 17 parts of the 47 listed are A/C Refrigerant Pressure Switch (6 parts), Power Window Switch (6 parts) and Brake Light Switch (5 parts). The other 14 part types cover the remaining 30 parts.
Every part on this page is matched to the 3.5L V6 — the only engine offered in the 2018 Nissan Maxima.
The most listed brands for 2018 Nissan Maxima electrical switch & relay parts are WELLS (22 parts), STANDARD MOTOR PRODUCTS (10 parts) and ROSTRA (4 parts), plus 8 more brands. Quality grades include Standard Replacement and Economy.
6 parts on this 2018 Nissan Maxima page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FOUR SEASONS 20994 (A/C Refrigerant Pressure Switch) and STANDARD MOTOR PRODUCTS SLS542 (Brake Light Switch). Click any part number to see every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Popular | 20994 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| UAC Popular | SW10087C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | View on Amazon |
| FACET | 250073 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 5S15924 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounted At Condenser and Liquid Tank | View on Amazon |
| WELLS | 1S15878 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Bracket Included: No | View on Amazon |
| WELLS | 1S16052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | CUT-OFF | View on Amazon |
This table covers the pressure switches on the A/C 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.
6 A/C Refrigerant Pressure Switch parts for the 2018 Nissan Maxima come from 4 brands — WELLS, FOUR SEASONS, UAC and 1 other brand. The "Popular" part is FOUR SEASONS 20994.
Part numbers include FOUR SEASONS 20994, UAC SW10087C and FACET 250073, among others listed above.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | RE8417 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UAC | RE8417C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
2 A/C System Relay parts for the 2018 Nissan Maxima come from UAC.
Part numbers include UAC RE8417 and UAC RE8417C.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 920479 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| HOLSTEIN | 2BLS0010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | SLS542 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ROSTRA | 620034 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S11012 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
5 Brake Light Switch parts for the 2018 Nissan Maxima come from 5 brands — DORMAN, HOLSTEIN, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS SLS542.
The Economy section lists 2 options from DORMAN and HOLSTEIN — the catalog's value-priced group. DORMAN 920479 is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, ROSTRA and WELLS supply 3 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS SLS542.
Listed part numbers: STANDARD MOTOR PRODUCTS SLS542, DORMAN 920479 and HOLSTEIN 2BLS0010, plus the other parts above.
Cruise Control Release Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S15888 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Cruise Control Release 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.
This group shows a single part: WELLS 1S15888.
Dimmer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Rain Sensitive Wipers | View on Amazon |
| WELLS | 1S17969 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Rain Sensitive Wipers | View on Amazon |
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.
WELLS supplies both parts for the 2018 Nissan Maxima.
This group includes WELLS 1S13876 and WELLS 1S17969.
Door Jamb Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 651395 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | AW1098 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front And Rear | View on Amazon |
| WELLS | 1S17917 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
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.
3 Door Jamb Switch parts are listed for the 2018 Nissan Maxima, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes ROSTRA 651395, STANDARD MOTOR PRODUCTS AW1098 and WELLS 1S17917.
Fog / Driving Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
One part is listed for the 2018 Nissan Maxima — WELLS 1S13876.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Rain Sensitive Wipers | View on Amazon |
| WELLS | 1S17969 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Rain Sensitive Wipers | View on Amazon |
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.
WELLS supplies both parts for the 2018 Nissan Maxima.
Listed part numbers: WELLS 1S13876 and WELLS 1S17969.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 600020 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | HR159T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
| STANDARD MOTOR PRODUCTS | HR159 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1R1564 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
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.
4 Horn Relay parts are listed for the 2018 Nissan Maxima, from STANDARD MOTOR PRODUCTS, ROSTRA and WELLS.
Listed part numbers: ROSTRA 600020, STANDARD MOTOR PRODUCTS HR159T and STANDARD MOTOR PRODUCTS HR159, plus the other parts above.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2012760 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S16363 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Mounting Hardware Included: No | View on Amazon |
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.
2 Ignition Starter Switch parts are listed for the 2018 Nissan Maxima, from BECK/ARNLEY and WELLS.
Listed part numbers: BECK/ARNLEY 2012760 and WELLS 1S16363.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V38730031 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PS686 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| GPD | 1815408 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Black Connector | View on Amazon |
| WELLS | 1S12815 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2OPS0373 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
5 Oil Pressure Sender / Switch parts for the 2018 Nissan Maxima come from 5 brands — VEMO, STANDARD MOTOR PRODUCTS, GPD and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PS686.
The Economy section: 1 option from VEMO. VEMO V38730031 is listed in this group.
Standard Replacement: 3 parts, from STANDARD MOTOR PRODUCTS, GPD and WELLS. A representative part number is STANDARD MOTOR PRODUCTS PS686.
1 further part sits outside the graded sections, with the same engine-level match.
This group includes STANDARD MOTOR PRODUCTS PS686, VEMO V38730031 and GPD 1815408 and the remaining parts above.
Outside Mirror Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | MRS176 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Heated Mirror | View on Amazon |
This table covers the Outside Mirror 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.
One part is listed for the 2018 Nissan Maxima — STANDARD MOTOR PRODUCTS MRS176.
Parking Brake Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 690227 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S12632 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Parking Brake 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.
2 Parking Brake Switch parts for the 2018 Nissan Maxima come from 2 brands — ROSTRA and WELLS.
Listed part numbers: ROSTRA 690227 and WELLS 1S12632.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular | 1S15552 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| WELLS Popular | 1S15543 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS2303 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS2215 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| STANDARD MOTOR PRODUCTS | DWS2300 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| WELLS | 1S15553 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
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.
6 Power Window Switch parts for the 2018 Nissan Maxima come from 2 brands — WELLS and STANDARD MOTOR PRODUCTS. The "Popular" part is WELLS 1S15552.
Listed part numbers: WELLS 1S15552, WELLS 1S15543 and STANDARD MOTOR PRODUCTS DWS2303, plus the other parts above.
Traction / Stability Control Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | TRA113 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WELLS | 1S14206 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Traction / Stability Control 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.
2 Traction / Stability Control Switch parts for the 2018 Nissan Maxima come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS TRA113 and WELLS 1S14206.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Rain Sensitive Wipers | View on Amazon |
| WELLS | 1S17969 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Rain Sensitive Wipers | View on Amazon |
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.
2 Turn Signal Switch parts for the 2018 Nissan Maxima come from WELLS.
This group includes WELLS 1S13876 and WELLS 1S17969.
Wiper / Washer Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S13876 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Wiper / Washer 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.
One part is listed for the 2018 Nissan Maxima — WELLS 1S13876.
Buying Electrical Switch & Relay Parts for a 2018 Nissan Maxima
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 3.5L V6 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: A/C Refrigerant Pressure Switch and Power Window Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2018 Nissan Maxima?
Our catalog currently lists 47 electrical switch & relay parts for the 2018 Nissan Maxima across 17 subcategories and 11 brands, covering the 3.5L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2018 Nissan Maxima?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Nissan Maxima was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2018 Nissan Maxima?
Every part on this page is matched to the 3.5L V6 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Nissan Maxima
Electrical Switch & Relay Parts for Other Nissan Maxima Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.