Clubjazz - Honda Jazz & HR-V Forums

Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: foxleys on June 19, 2021, 12:32:24 PM

Title: Water in tailgate cavity.
Post by: foxleys on June 19, 2021, 12:32:24 PM
Due the the volume of water/rain a lot of us had in the last few days, I would suggest lifting & lowering your tailgate to see if you can hear any water inside the tailgate cavity.

I removed the two maintenance covers for the rear light clusters and there is/was water in this area, just now when I checked.

I took my car the the dealer yesterday, and we found two small plastic bungs in the drain holes (bottom left & right of the tailgate) they removed these, most of the water had drained on my way home.

I would suggest you check to see if these bungs are there in your car, if they are, don’t remove them but take the car to your dealer & ask them why they are there.

They are small and possibly get forgotten during the pdi.

The real question is why water is there in the first place, I’ll be going to my dealer on Monday to ask!

I have pictures if any one wants to see them.
Title: Re: Water in tailgate cavity.
Post by: nowster on June 19, 2021, 01:32:40 PM
Manchester (contrary to reputation) has got away with no appreciable rain for the last six weeks!

Photos might be helpful.
Title: Re: Water in tailgate cavity.
Post by: foxleys on June 20, 2021, 02:09:42 PM
Please see photos attached:

Title: Re: Water in tailgate cavity.
Post by: John Ratsey on June 20, 2021, 03:32:34 PM
I've just looked for the drainholes on my Crosstar and couldn't see them. However, in 11 months I've not heard or seen any evidence of water ponding on the inside of the tailgate. The top part ought to be fairly well water-proofed by design.
Title: Re: Water in tailgate cavity.
Post by: Westy36 on June 20, 2021, 08:52:08 PM
That is not good. Lets hope the dealer can trace the source of the leak.
Title: Re: Water in tailgate cavity.
Post by: IanG on June 21, 2021, 05:54:26 AM
Just wondered how your rear number plate has been attached to the tailgate, screws/rivets or adhesive.
If screws/rivets have been used, could this be the source of water ingress? Not in area of rear lights but the water would settle at bottom of tailgate and then potentially move to the light area when the tailgate is raised.
Title: Re: Water in tailgate cavity.
Post by: Kremmen on June 21, 2021, 06:54:03 AM
Hosepipe and torch job.
Title: Re: Water in tailgate cavity.
Post by: foxleys on June 21, 2021, 09:59:16 AM
Just wondered how your rear number plate has been attached to the tailgate, screws/rivets or adhesive.
If screws/rivets have been used, could this be the source of water ingress? Not in area of rear lights but the water would settle at bottom of tailgate and then potentially move to the light area when the tailgate is raised.


Great suggestion, I’ll check & advise.

I have to admit, I didn’t think of that!

Many thanks.
Title: Re: Water in tailgate cavity.
Post by: Jocko on June 21, 2021, 10:10:14 AM
If Honda has engineered drain holes then they probably expected water to get in.
Title: Re: Water in tailgate cavity.
Post by: culzean on June 21, 2021, 10:54:55 AM
The bottoms of doors and tailgate would normally have drain slots designed into them,  there are drain holes in bottom of floor pan and these are for the draining off of paint and any fluids used in preparing the metal for painting ( floor pans get more treatments during manufacture than other body parts ) and the holes get closed up with plastic bungs.   The tailgate on Civic is plastic,  as I found out when replacing rear numberplate.   Don't know if Jazz after MK2 are plastic
Title: Re: Water in tailgate cavity.
Post by: richardfrost on June 21, 2021, 12:26:16 PM
Could it be rear washer fluid leaking somewhere in the system?
Title: Re: Water in tailgate cavity.
Post by: foxleys on June 21, 2021, 01:20:44 PM
Another great suggestion, many thanks!

I’ll check.....
Title: Re: Water in tailgate cavity.
Post by: Zaier on June 21, 2021, 02:17:37 PM
Could it be rear washer fluid leaking somewhere in the system?
I'll tend to exclude it, as the nozzle sits on top of the rear glass and not below it, the pipe is routed outside the metallic frame, and goes into it only when connecting to the nozzle iself.

I can only say that I haven't experienced this issue on my Jazz, even if during spring we had really big showers also ehre in Italy.
That part of the tailgate should be completely dry as the seal goes all around the metallic frame, so I can only think of water intrusion from the rear lights gasket and the wiper gasket.