Hyundai i20 Relays
Relays for the Hyundai i20 — new, used and aftermarket stock, quoted once we know which i20 you are running
What Are Hyundai i20 Relays?
A relay lets a small signal from the ECU or ignition switch a much larger current — fuel pump, cooling fan, starter, headlamps. The Hyundai-specific catch is that the relay list is not the same across a model: the CRDi diesels carry a glow-plug relay that no Kappa or Gamma petrol car has, and air-conditioned derivatives add relays that the base cars simply do not fit. That is why a relay layout for a 1.4 petrol i20 tells you very little about a 1.6 CRDi. Work off the diagram on the underside of your own fuse-box lid, and send us the engine code with the enquiry.
Signs You Need New Relays
i20 Relays: what actually decides fitment
What changes across the range
Ordering relays for a i20 starts with the generation: PB, then GB, then the current BC3.
The PB and GB are different cars underneath despite the shared badge, so a part listed simply as "i20" is not automatically the right one — the generation code decides it.
Worth knowing: the i20shares its Kappa and Gamma engine families with the Kia Rio.
What we check on relays
- •The generation code, because i20 parts lists split on it
- •The engine family — this i20 was sold with Kappa 1.2, Gamma 1.4 and Kappa 1.0 T-GDi (N Line)
- •The VIN, and the fault code if the car has been scanned
- •Whether the car is pre- or post-facelift within its generation
In South Africa the i20 is mostly a high-mileage commuter hatch that spends its life in stop-start city traffic, which is why wear items move faster on an i20 than on almost anything else Hyundai sells here. That is the wear pattern we stock and source against.
Hyundai i20 Relays FAQs
Will relays from another i20 fit mine?
Not automatically. The i20 sold in South Africa as PB, then GB, then the current BC3, and the PB and GB are different cars underneath despite the shared badge, so a part listed simply as "i20" is not automatically the right one — the generation code decides it. Send us the generation code off your VIN plate and we will confirm it either way before anything is dispatched.
What should I send you when asking about i20 relays?
The VIN is the single most useful thing — a photo of the plate is fine. Failing that, the generation code and the engine code off the block. The i20 ran as PB, then GB, then the current BC3, so the generation is what narrows the search.
Does my Hyundai have a glow plug relay?
Only if it is a CRDi diesel. That is the single biggest difference between the relay layout on a diesel and a petrol Hyundai — the Kappa and Gamma petrol cars have no glow plugs and therefore no glow plug relay at all. If a diesel is hard to start cold, that relay is the first place to look.
What does a failing relay do on a Hyundai?
The pattern we see most is a no-start with the fuel pump silent, a loud click from the fuse box, cooling fans stuck permanently on or off, or an electrical fault that comes and goes with no obvious trigger. Intermittent is the word that most often means relay.
What does a Hyundai relay cost to replace?
Get a free quote through our form for exact pricing on your model. Most common Hyundai relays are inexpensive parts; the bigger variable is diagnosis time to work out which one has failed, since several sit in the same engine bay fuse box and look identical.
The starter relay clicks but the car will not crank. Is the relay dead?
Not necessarily, and this is worth checking before you buy anything. A click without crank means the relay is energising but not passing enough current to the starter solenoid — and a tired battery mimics that exactly. We check battery voltage under load and the earth straps before condemning the relay.
How do I find and test a relay on my Hyundai?
Work off the diagram on the underside of your own fuse-box lid rather than a diagram from the internet, because air-conditioned and non-air-conditioned derivatives fit different relays and facelift cars occasionally moved a slot. To test, swap it with an identical relay of the same rating from a non-critical circuit such as the horn and see whether the fault follows.
Learn More About Hyundai i20 Relays
Find an RMI-accredited Hyundai workshop in your area for diagnosis and repair.
General motoring advice and roadside assistance for SA Hyundai owners.
UK owner reports on Hyundai electrical and relay-related faults by model.
i20 Electrical: related components
Get your i20 relays matched properly
A part number from the old unit, or simply your VIN, is enough for us to identify the right relays for your i20.