4H0951253A Relay 645 for Audi / Volkswagen / Skoda / Seat / Porsche
Relay 645 with OEM / P/N 4H0951253A is used across compatible Audi, Volkswagen, Skoda, Seat and Porsche applications for various electrical control functions. Depending on the vehicle and chassis, applications can include fuel pump control, auxiliary heater compressor control and other supplemental electrical systems.
This product is an individual Relay 645. The package contains one relay and does not include the surrounding electrical module, pump, motor, heater system or other controlled assembly.
OEM / Reference Numbers
- 4H0951253A — primary OEM / P/N and fitment reference
Part Type
- Automotive electrical relay
- Relay 645
- Individual replacement relay
- OEM / P/N 4H0951253A
What This Part Does
Relay 645 switches electrical power for compatible vehicle systems. The exact controlled circuit depends on the vehicle application and chassis. The product page confirms use in functions including fuel pump control, auxiliary heater compressor operation and other supplemental electrical systems.
Compatible Vehicles
Audi
- Audi A1
- Audi A3
- Audi A4
- Audi A4 Allroad
- Audi A5
- Audi A6
- Audi A7
- Audi A8
- Audi Q2
- Audi Q3
- Audi Q5
- Audi Q7
- Audi Q8
- Audi TT
- Audi R8
- Audi S3
- Audi S4
- Audi S5
- Audi S6
- Audi S7
- Audi RS4
- Audi RS5
- Audi RS6
- Audi RS7
Volkswagen
- Volkswagen Amarok
- Volkswagen Arteon
- Volkswagen Atlas
- Volkswagen Atlas Cross Sport
- Volkswagen Beetle
- Volkswagen Caddy
- Volkswagen CC
- Volkswagen Crafter
- Volkswagen EOS
- Volkswagen Golf
- Volkswagen Golf Plus
- Volkswagen Jetta
- Volkswagen Passat
- Volkswagen Passat CC
- Volkswagen Polo
- Volkswagen Scirocco
- Volkswagen Sharan
- Volkswagen Tiguan
- Volkswagen Touareg
- Volkswagen Touran
- Volkswagen Transporter T5
- Volkswagen Transporter T6
- Volkswagen Multivan
- Volkswagen EuroVan
Skoda
- Skoda Citigo
- Skoda Fabia
- Skoda Kamiq
- Skoda Karoq
- Skoda Kodiaq
- Skoda Octavia
- Skoda Rapid
- Skoda Roomster
- Skoda Scala
- Skoda Superb
- Skoda Yeti
Seat
- Seat Alhambra
- Seat Altea
- Seat Arona
- Seat Ateca
- Seat Ibiza
- Seat Leon
- Seat Mii
- Seat Toledo
Porsche
- Porsche Cayenne
- Porsche Macan
- Porsche Panamera
Technical / Application Details
- Part type: Relay 645
- Primary OEM / P/N: 4H0951253A
- Confirmed brands: Audi, Volkswagen, Skoda, Seat, Porsche
- Confirmed functions include fuel pump control and auxiliary heater compressor control
- Additional electrical functions depend on the vehicle and chassis
- Package contents: 1 × Relay 645
Common Symptoms of Relay Failure
- Intermittent operation
- The affected system stops responding
- Electrical fault or warning
- Unusual motor or actuator noise in the controlled system
Why Choose This Replacement Relay
- Direct replacement reference 4H0951253A
- Designed for the confirmed Audi, Volkswagen, Skoda, Seat and Porsche applications listed above
- Allows replacement of the individual Relay 645 without replacing unrelated surrounding components
- Package includes one replacement relay
Important Before Ordering
- Use OEM / P/N 4H0951253A as the primary fitment check.
- Compare the relay design, dimensions, connectors and orientation with the installed part.
- Do not select the relay by vehicle model alone.
- Confirm which electrical circuit Relay 645 controls in the specific vehicle application.
- Diagnose the controlled system before replacing the relay so another electrical or mechanical fault is not mistaken for relay failure.
- The product page does not specify voltage, current rating, pin configuration, engine codes or production years.
What does OEM 4H0951253A fit?
OEM / P/N 4H0951253A is used as Relay 645 in confirmed Audi, Volkswagen, Skoda, Seat and Porsche applications. The product page lists multiple models across these brands, but compatibility should be confirmed by the exact relay number and physical design.
What does Relay 645 control?
The exact function depends on the vehicle and chassis. Confirmed applications include fuel pump control, auxiliary heater compressor control and other supplemental electrical systems.
What symptoms can indicate a failed Relay 645?
Confirmed symptoms include intermittent operation, the affected system stopping response, an electrical fault or warning, and unusual motor or actuator noise.
Is 4H0951253A the OEM number for Relay 645?
Yes. The product page identifies 4H0951253A as the OEM / P/N for Relay 645 and uses it as the primary fitment reference.
What is included with this Relay 645?
The package contains one Relay 645 with reference 4H0951253A.
How do I confirm compatibility before ordering?
Match OEM / P/N 4H0951253A and compare the relay design, dimensions, connectors and orientation with the installed part. Do not confirm fitment by vehicle model alone.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings