Keep the engine cooling fan cycling on cue with the Standard Ignition Engine Cooling Fan Switch TS-526 (also written TS526). This thermal switch senses coolant temperature and makes electrical contact at its specified lower-temperature set point, passing the signal on to the fan controller so the cooling fan runs when needed. It installs as a direct-fit replacement for the 1990-1996 Jaguar XJ6 and 1994-1996 Jaguar XJ12 — see the Buyer's Guide tab for engine-level fitment.
- Wax-pellet actuation: custom wax formulations expand when heated to activate a snap-action electrical contact and transfer the electrical signal to the fan controller.
- Calibrated & tested: wax pellets are custom-formed for the temperature-range specification, then every unit is calibrated and tested to confirm switch actuation at its specified temperature and factory-calibrated to make contact at the specified lower-temperature set point.
- Bimetallic contact arm: a formed bimetallic arm relies on the different expansion rates of two fused metals — a creep-action device built for precise performance.
- Robust build: high-grade materials meet the demands of today's service professional.
Standard Ignition maintains quality control throughout manufacturing, from componentry to finished product.
Interchange: TFS601 · SW4374 · FS246 · DBC10013
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the TS-526 cooling fan switch do?
It senses coolant temperature and closes an electrical contact at its specified set point, signaling the fan controller to run the engine cooling fan.
Which vehicles does this switch fit?
It's a direct-fit replacement for the 1990-1996 Jaguar XJ6 and the 1994-1996 Jaguar XJ12. Check the Buyer's Guide tab to confirm engine-level fitment for your vehicle.
What are signs this switch may need replacing?
A cooling fan that won't turn on, runs constantly, or engine overheating can point to a faulty switch. Diagnose the cause first; if this switch is the culprit, the TS-526 replaces it.
What interchange numbers does the TS-526 replace?
It cross-references TFS601, SW4374, FS246, and DBC10013.
Is the switch calibrated before shipping?
Yes. Every unit is calibrated and tested to confirm actuation at its specified temperature and is factory-calibrated to make contact at the specified lower-temperature set point.
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