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**mp21** · 24:th-Jul-2020, 10:59:37

Replaced both blown bulbs this morning and are working fine but the "Check Number Plate Lamp" error is still coming on when ignition turned on. Any ideas?

Cheers

***Rusty2009*** · 25:th-Jul-2020, 07:56:03

Sometimes it can take a few starts before it goes away as the BCM has the error stored in memory.

if you replaced them with LED bulbs you will get the error.

**mp21** · 25:th-Jul-2020, 08:36:28

Cheers for your reply, Rusty, I actually sorted it out. Just in case anyone else comes across this it was due to the wrong bulbs. I used 504 (12V 3W) instead of 501 (12V 5W). Even though the bulbs were both working they weren't drawing enough power and so the management system thought they weren't working.

***Rusty2009*** · 25:th-Jul-2020, 10:31:29

Glad you sorted it.

**Galway11** · 18:th-Oct-2020, 19:10:07

Replaced both bulbs with 501's 3 days ago & lights are both working yet error is still coming up on the dash check number plate light ?
Is there any way I can reset?

***Rusty2009*** · 19:th-Oct-2020, 08:27:15

(18:th-Oct-2020, 19:10:07)Galway11 Wrote: Replaced both bulbs with 501's 3 days ago & lights are both working yet error is still coming up on the dash check number plate light ?
Is there any way I can reset?

Did you replace them with halogen bulbs or LED bulbs?

**Galway11** · 22:nd-Oct-2020, 19:51:25

(18:th-Oct-2020, 19:10:07)Galway11 Wrote: Replaced both bulbs with 501's 3 days ago & lights are both working yet error is still coming up on the dash check number plate light ?
Is there any way I can reset?

no replaced like for like .... 501 osram halogen

***Rusty2009*** · 24:th-Oct-2020, 07:48:18

That is very strange then, a couple things you can try.

1. Make sure the contacts are clean and holding the bulb tightly.
2. Remove the battery negative for 1hr+ this will allow all systems to fully shut and reboot once reconnected (which can sometimes solve these errors).

**Big Dave2** · 26:th-Oct-2020, 12:09:30

(22:nd-Oct-2020, 19:51:25)Galway11 Wrote:
(18:th-Oct-2020, 19:10:07)Galway11 Wrote: Replaced both bulbs with 501's 3 days ago & lights are both working yet error is still coming up on the dash check number plate light ?
Is there any way I can reset?

no replaced like for like .... 501 osram halogen

Did you use the correct wattage bulbs? I had some 501's kicking about in my garage but they were only something like 2 watts, and thus I still got the bulb fail warning when I fitted them. IIRC they need to be 5 watt 501's.

**MarkAP68** · 27:th-Oct-2020, 07:24:21

I had a similar problem with a front side light when I had an Astra twintop a few years ago, it only seemed to happen this time of year and found out it was condensation on the connectors

**Galway11** · 10:th-Nov-2020, 23:33:17

Cheers. Problem resolved by taking negative terminal for 1 hr

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