Boot release relay

Boot release relay

Author
Discussion

pieeater

Original Poster:

56 posts

104 months

Wednesday 13th September 2023
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Hi can anyone tell me were I can get about release relay for my 350i. Thanks

KKson

3,405 posts

126 months

Wednesday 13th September 2023
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I took my old one out, measured it, and found it was a very common solenoid, and bought one for £5 off ebay.

mk1fan

10,522 posts

226 months

Wednesday 13th September 2023
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Not sure there is a relay, hardly huge power being sent to the solenoid. Unless, in their usula TVRness, they decided the momentary switch couldn't handle the power and implemented an overly complicated solution to a non-existent problem confused

If there is a relay, then it would be a standard 4-pin switching relay available from your local motor spares store. Doubt it needs huge Amap rating.

If you mean the release solenoid, then as above standard two wire solenoid to match mounting points of existing - any retro fit central locking kit item would suit.

pieeater

Original Poster:

56 posts

104 months

Wednesday 13th September 2023
quotequote all
On relay and fuse diagram it does show a boot release relay

mk1fan

10,522 posts

226 months

Wednesday 13th September 2023
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roflroflroflroflroflroflroflrofl

mk1fan

10,522 posts

226 months

Wednesday 13th September 2023
quotequote all
I should add that I fitted a 'bonnet release' cable and pull (Land Rover Item - basically a bowden cable and handle) to the Wedge and S's so that I could release the boot when the battery was duff, or if I didn't want to open the door to use the switch.

Pumpkin123

76 posts

71 months

Thursday 14th September 2023
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Weirdly I've just changed a couple of my relays which I discovered were getting really hot. I bought these relays for positions not ignition related...

https://www.ebay.co.uk/itm/111581062674

As per comment above, slightly odd why they relayed the boot release and didn't bother putting a relay on the internal heater, might have saved a few switch's if they had...

Wedg1e

26,805 posts

266 months

Wednesday 28th February
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On the DHCs there is a way (or two) to open the bootlid even if the car battery is flat... but a bit like Fight Club, we don't talk about it wink

On my car ('87) the boot lock solenoid is fed from the same relay as both windowlifts, but that relay is ignition switched and just supplies the relevant fuses. From the boot fuse the switch feeds the solenoid directly, there isn't another relay. If your windows lift OK, that would suggest any issue isn't related to the relay.
I modified my heater wiring some years ago to include a relay for the high-speed position, the low speed is well within the switch rating.