Standard Ignition EFL175 Sun Load Temperature Sensor

Brand Standard Ignition EFL175
Attachment Method Direct, snap fit
Color/Finish Black
Connector Gender Female
Connector Quantity 1
Connector Shape Rectangular
Connector Type Plug in
Contents Switch
Terminal Gender Male
Terminal Quantity 4
Terminal Type Pin
Fits Audi · 48 vehicles

Direct, snap-fit design. Installs quickly with a plug-in rectangular connector.

Black finish. Clean, discreet look for the sensor housing.

Pin-terminal connection. Uses a 4-pin male terminal for secure electrical contact.

Cross-references Standard Ignition EFL175, 8P09075394PK and FC784 for the same application. See all 5.

$71.47Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $71.47
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Sun Load Temperature Sensor for Audi Applications

Standard Ignition EFL175 is a direct, snap-fit sun load temperature sensor with a black finish, a rectangular female connector, and a 4-pin male terminal layout. It is built for vehicles that use a plug-in sensor to help the climate control system respond to changing sunlight and cabin temperature conditions.

Key Features

  • Direct, snap-fit attachment method for OE-style replacement
  • Black housing with a rectangular connector design
  • Female connector, plug-in type
  • 4-pin male terminal configuration
  • Sensor switch contents for sun load temperature sensing applications
  • Standard Ignition EFL175 replacement part number

Detailed Product Information

This Standard Ignition EFL175 sun load temperature sensor is used in climate control systems that monitor solar load and cabin conditions. By providing input to the HVAC control module, it helps the system react to sunlight changes more accurately in Audi A3, Audi A3 Quattro, Audi A4, Audi A4 Quattro, Audi RS4, and Audi S4 applications. This part cross-references FC784 and SLS104 for the same application.

What This Sensor Helps Address

  • Inconsistent automatic climate control response
  • HVAC output that does not adjust properly to sunlight exposure
  • Fault codes related to sun load or cabin temperature sensing
  • Reduced comfort from delayed temperature correction
  • Replacement needs for a damaged or worn sensor connector assembly

Installation Notes and Tips

Verify connector shape, terminal count, and attachment style before installation. The EFL175 uses a direct, snap-fit design with a rectangular female connector and 4-pin male terminals, so matching the OE connector layout is important for proper fitment. Fits 2006-2011 Audi A3, N/A; Fits 2010-2011 Audi A3 Quattro, N/A; Fits 2006-2008 Audi A3 Quattro, N/A; Fits 1996-2009 Audi A4, N/A; Fits 1996-2009 Audi A4 Quattro, N/A; Fits 2007-2008 Audi RS4, N/A; Fits 2004-2008 Audi S4, N/A; Fits 2000-2001 Audi S4, N/A.

Quality Assurance

Standard Ignition supplies replacement electrical and sensor components for service applications. EFL175 is built to match the listed connector and attachment specifications for the confirmed Audi fitments above.

This part fits 48 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
2011AudiA3
2011AudiA3 Quattro
2010AudiA3
2010AudiA3 Quattro
2009AudiA3
2009AudiA4
2009AudiA4 Quattro
2008AudiA3
2008AudiA3 Quattro
2008AudiA4
2008AudiA4 Quattro
2008AudiRS4
2008AudiS4
2007AudiA3
2007AudiA3 Quattro
2007AudiA4
2007AudiA4 Quattro
2007AudiRS4
2007AudiS4
2006AudiA3
2006AudiA3 Quattro
2006AudiA4
2006AudiA4 Quattro
2006AudiS4
2005AudiA4
2005AudiA4 Quattro
2005AudiS4
2004AudiA4
2004AudiA4 Quattro
2004AudiS4
2003AudiA4
2003AudiA4 Quattro
2002AudiA4
2002AudiA4 Quattro
2001AudiA4
2001AudiA4 Quattro
2001AudiS4
2000AudiA4
2000AudiA4 Quattro
2000AudiS4
1999AudiA4
1999AudiA4 Quattro
1998AudiA4
1998AudiA4 Quattro
1997AudiA4
1997AudiA4 Quattro
1996AudiA4
1996AudiA4 Quattro
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — EFL1758P09075394PKFC784MSSA35SLS104