TZD - Interior light fault

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TZD_ARN
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TZD - Interior light fault

Post by TZD_ARN » Tue Dec 11, 2018 11:42 pm

My 92 TZD has developed a fault with the interior lighting. Began to play up intermitantly a couple weeks ago where the interior lights would fail to illuminate after opening drivers door. Initially suspected door switch, however opening any of the remaining doors has no effect on the problem. The interior lights all work perfectly if switched on manually within the car. Is there a timed relay somewhere which may be at fault? Has anyone else experienced this? All help much appreciated.

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Re: TZD - Interior light fault

Post by Defender110 » Wed Dec 12, 2018 9:27 am

The spring tag festoon bulb holders can play up, I would take the bulbs out and bend the tags slightly to make the bulb a tighter fit first of all before looking any deeper.
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mat_fenwick
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Re: TZD - Interior light fault

Post by mat_fenwick » Wed Dec 12, 2018 12:24 pm

If it's both lights simultaneously, I'd be looking at the timer relay (behind the dash, between glove box and coin box). Not known them to be a common fail, but relays can and do wear out.
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Re: TZD - Interior light fault

Post by rutter123 » Wed Dec 12, 2018 6:17 pm

I think Jaba has been experiencing the same problem but in his case it fixed itself.
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David
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Re: TZD - Interior light fault

Post by David » Sun Dec 30, 2018 9:19 pm

I once saw something like this myself. The GTI (and I believe the TZD) use a timed relay box for the interior lights, and they didn't work correctly. It turned out that one of the earth connecting plug was loose behind the steering wheel. Once this was reconnected properly it worked fine. Perhaps this is your issue? Just pull the lower steering column cover off and have a look.

Hope that helps.
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Re: TZD - Interior light fault

Post by KevR » Sun Jan 13, 2019 11:14 am

David wrote:
Sun Dec 30, 2018 9:19 pm
I once saw something like this myself. The GTI (and I believe the TZD) use a timed relay box for the interior lights, and they didn't work correctly. It turned out that one of the earth connecting plug was loose behind the steering wheel. Once this was reconnected properly it worked fine. Perhaps this is your issue? Just pull the lower steering column cover off and have a look.

Hope that helps.


Having the same problem with my TZD at the moment, and thinking about it, it stems from about the same time as I removed the steering column to stake the lower bearing in place. So I suspect I might have disturbed the connection - will check!
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!