Convertible top no longer opening

Tiny
DJSTATUS
  • MEMBER
  • 2002 LEXUS SC 430
  • V8
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
Hi,

My SC430's convertible top suddenly will no longer open. The luggage cover and valet button are in the correct positions. Are there any troubleshooting tips you can provide?

Thank You
Do you
have the same problem?
Yes
No
Thursday, April 17th, 2008 AT 7:03 PM

11 Replies

Tiny
SERVICE WRITER
  • EXPERT
I would start at the basics first. have you checked the fuses there are 7 of them that ruin the system?

Here is a guide to help you run a simple test.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Have the codes been checked? Here is the top wiring diagram and the fuse locations.

Check the last diagram it has moist of the fuses you need. Check out the diagrams (Below). Please let us know what you find.

Cheers
Was this
answer
helpful?
Yes
No
+6
Thursday, April 17th, 2008 AT 7:27 PM
Tiny
DJSTATUS
  • MEMBER
Hi, thanks for the prompt reply. I checked the fuses in the trunk panel there are two 20's that look like they are fine. Apologies for not understanding, which codes are you referring to?

Thanks!
Was this
answer
helpful?
Yes
No
-1
Thursday, April 17th, 2008 AT 7:31 PM
Tiny
SERVICE WRITER
  • EXPERT
THere are codes stored in the pcm that will give DTC or Diagnostic Trouble Codes. A scanner is required to get them out of the pcm. However we may be able to get through this otherwise.

Check these fuses:


http://www.2carpros.com/forum/automotive_pictures/30961_pddoor1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/30961_pddoor_1.jpg



They are located on the passenger side.


http://www.2carpros.com/forum/automotive_pictures/30961_pddoor2_1.jpg



In the #1 jusnction block.
Was this
answer
helpful?
Yes
No
Thursday, April 17th, 2008 AT 7:40 PM
Tiny
DJSTATUS
  • MEMBER
Ok I checked those two and they look to be ok.

Thanks
Was this
answer
helpful?
Yes
No
+2
Thursday, April 17th, 2008 AT 7:49 PM
Tiny
SERVICE WRITER
  • EXPERT
Also check all of these in the trunk:


http://www.2carpros.com/forum/automotive_pictures/30961_pddoor3_1.jpg



http://www.2carpros.com/forum/automotive_pictures/30961_pddoor4_1.jpg

Was this
answer
helpful?
Yes
No
+3
Thursday, April 17th, 2008 AT 7:50 PM
Tiny
DJSTATUS
  • MEMBER
All those seem to be good as well.

Thx
Was this
answer
helpful?
Yes
No
Thursday, April 17th, 2008 AT 7:58 PM
Tiny
SERVICE WRITER
  • EXPERT
There are 55 different trouble codes associated with this system as it is complex:


http://www.2carpros.com/forum/automotive_pictures/30961_lexus_1.jpg



These are the vairious components. The trouble codes give a start to diagnosing this system and after looking at this, I need to know them.

Maybe autozone can read them, as they do this for free or may need a special scanner for the Lexus, not sure on this. But without codes the field is too large to go after.
Was this
answer
helpful?
Yes
No
+1
Thursday, April 17th, 2008 AT 8:06 PM
Tiny
DJSTATUS
  • MEMBER
Thank you, your assistance is tremendously appreciated!

Thanks again I will see what I can find.
Was this
answer
helpful?
Yes
No
Thursday, April 17th, 2008 AT 8:09 PM
Tiny
SERVICE WRITER
  • EXPERT
I found somthing that may help. I found a technical service bulletin that mentions that if a request is made to open the luggage door while the hardtop is in operation, the operation will be cancelled. IT will be then necessary to manually finish the started operation. I would try to manually do this and see if it resets the system. After it is fully opened and closed it should then be enabled.

If you need the procedure to do this let me know.
Was this
answer
helpful?
Yes
No
+3
Friday, April 18th, 2008 AT 3:13 PM
Tiny
DJSTATUS
  • MEMBER
I got frustrated and rechecked the fuses and I found one that was out so I replaced it and now the top works great! Sorry for the run around.

Thanks!
Was this
answer
helpful?
Yes
No
+1
Tuesday, April 22nd, 2008 AT 6:37 PM
Tiny
SERVICE WRITER
  • EXPERT
Good to hear, please use 2CarPros anytime we are here to help.

Cheers
Was this
answer
helpful?
Yes
No
+2
Tuesday, April 22nd, 2008 AT 6:48 PM

Please login or register to post a reply.

Recommended Guides