Hey all,

Can someone please tell me where the glow plug relay is located on a '78 240D??

Thanks!

Also, are these very likely to fail and what are the syptoms?

Well, mine is located on the starboard inner fender. But it appears to have been lifted from a GM pickup truck, and is wired to a manual switch under my dash. PO modification.

They do go out from time to time. Symptom is sudden lack of any glow plug function and associated difficutly in starting. I don't recall whether the glow plug light still comes on when the relay is toast. There have been some threads on that here in the past.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

It's under the footwell panel on the driver's side. It's a fairly large silver box with 7 pins. Part number is 001 545 2232.

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Thank you all!