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-   -   Driving in the Rains - Tips (https://www.team-bhp.com/forum/technical-stuff/20950-driving-rains-tips-9.html)

gd1418 31st August 2007 12:56

This indeed is weird. Defogger is generally independant. Maybe Maruti while designing SX4 thought that rear windscreens fog only after dusk..!!

Defogger can be used dry out water drops but for that it needs to be switched on for long..

Quote:

Originally Posted by sathya_nars (Post 549355)
BTW, I noticed in my SX4 that rear defogger can be switched on only when headlight switch is on - weird or am I missing something?

Also, can rear defogger be used to dry out water drops after rain stopped?


santosh.s 31st August 2007 13:03

Quote:

Originally Posted by Vista2Swift (Post 549340)
The a/c works when the glass is fogged from inside. If its not working or increasing the fogging then switch off the AC and use the heater for the glass, it works :Cheering: .

Unless the system in your car is designed to prohibit it, you should use both A/C and heater simultaneously.

Quote:

For the rear glass however there is no option but to install a after-market defogger/wiper.
defogger is fine, but wiper is an option only for hatchbacks. I have never seen or heard of sedans with rear wipers! Wish there was such a trend, though:p

Vista2Swift 31st August 2007 13:32

Quote:

Originally Posted by santosh.s (Post 549461)
Unless the system in your car is designed to prohibit it, you should use both A/C and heater simultaneously.

I've never heard of using or tried both - What happens ? Santosh can you pls elaborate..

Torqy 31st August 2007 13:42

Quote:

Originally Posted by gd1418 (Post 549318)
You get after market defogger that can be installed by any accessories guy. This shall prevent the blurring of the rear windscreen when switched on.

Hi gd1418,

My Bolero has a/c with no heater. Can i still fix a defogger?
Which make of defogger did you use?
How much does it cost?

Thanks in advance,

-- Torqy

Thad E Ginathom 31st August 2007 14:39

...me too! And that was in UK where the specs are more generous anyway.

I think it is something to do with the slope of the glass, that they found they needed to put rear wiper for the more vertical hatchback window.

Or maybe there is too much curve in a saloon (English for sedan, I think?) car glass?

I don't know.

But it would be so useful on any car...

Even more useful would be some entirely new technology, like a curtain of compressed air blowing the rain away!

santosh.s 31st August 2007 15:04

Quote:

Originally Posted by Vista2Swift (Post 549501)
I've never heard of using or tried both - What happens ? Santosh can you pls elaborate..

Post #115 & #116 answer that...

Quote:

Originally Posted by Torqy (Post 549517)
Hi gd1418,

My Bolero has a/c with no heater. Can i still fix a defogger?

defogger is just a set of electrical heating elements (wires) attached to the windscreen. It has no relation to A/C or it's heater (the one used to warm up the whole cabin).

sathya_nars 31st August 2007 16:45

Quote:

Originally Posted by santosh.s (Post 549461)
defogger is fine, but wiper is an option only for hatchbacks. I have never seen or heard of sedans with rear wipers! Wish there was such a trend, though:p

I did enquire why sedans normally don't have rear wiper but hatchbacks have.

Dealer said that hatchback's rear door (for boot) is single component with rear glass fit in it and boot is inside (not extending), so it is easy to fix wiper.

However in sedans, rear glass and door (boot) are separate entities and it is difficult to fix wiper.

However u'll rarely see sedan with rear wiper. They somehow designed to fit holder of wiper on roof or so.

gkrishn 31st August 2007 17:08

Quote:

Originally Posted by sathya_nars (Post 549767)
Dealer said that hatchback's rear door (for boot) is single component with rear glass fit in it and boot is inside (not extending), so it is easy to fix wiper.

However in sedans, rear glass and door (boot) are separate entities and it is difficult to fix wiper.

These showroom guys can be real funny... this is not the reason. Afaik, it is some to do with hatch back desing which necessitates a rear wiper and sedan dont need them. May be the muck from rear tyre thrown on to the rear wind shield?!?! I dont know the exact reason...

planet_rocker 31st August 2007 17:09

IMO - i dont think that it has got much to do with ease of fitting the rear wiper - the hatch backs / octi / viva's (what is the body type called??) rear windshield accumulates more rain water / dirt than normal sedans (read it somewhere in this forum) and that is the reason they are (should have been) provided with rear wiper / washer.

edit : oops! just saw gkrishn's post :p

santosh.s 31st August 2007 17:23

Quote:

Originally Posted by planet_rocker (Post 549789)
Ithe hatch backs / octi / viva's (what is the body type called??)

notch-backs.......................................(the message was too short!)

planet_rocker 31st August 2007 17:28

too many dots attract a lot of attention. simply write it as (20 characters :p )

thanks Santosh - now i remember :)

santosh.s 31st August 2007 17:58

Quote:

Originally Posted by gkrishn (Post 549788)
These showroom guys can be real funny...

Yeah, showroom guys are more of salesmen. They might have been selling mobile connections or insurance policies during their previous employment. I think they can answer only frequently asked questions by majority of their customers. If they don't know the answer, they are very likely to just bluff or redirect to another useless person!

For such queries forums like this one are the best bet, or if you know any person experienced in concerned industry. Even technicians in a road-side garage might be quite knowledgeable (for all practical purposes, I meant)

Quote:

this is not the reason. Afaik, it is some to do with hatch back desing which necessitates a rear wiper and sedan dont need them. May be the muck from rear tyre thrown on to the rear wind shield?!?! I dont know the exact reason...
Regardless of that, we have realized at least one other reason to have a rear wiper on all cars- visibility in rains, right?:)

gkrishn 31st August 2007 18:06

Quote:

Originally Posted by santosh.s (Post 549830)
Regardless of that, we have realized at least one other reason to have a rear wiper on all cars- visibility in rains, right?:)

Yes, under heavy rains, using them has increased the rear visibility drastically. But do you need that? Except may be when your on reverse gear.

Believe me, i have used it mostly to show off... hey i have a rear wiperlol:

santosh.s 31st August 2007 18:28

Quote:

Originally Posted by gkrishn (Post 549833)
But do you need that? Except may be when your on reverse gear.

I think, even during normal driving, it would definitely be good to have better rear visibility... to keep an eye on traffic behind you through inner rear-view-mirror. Side mirrors become almost useless due to rain-drops accumulating on mirror itself as well as the window glass in between.

sathya_nars 31st August 2007 19:37

Quote:

Originally Posted by santosh.s (Post 549854)
I think, even during normal driving, it would definitely be good to have better rear visibility... to keep an eye on traffic behind you through inner rear-view-mirror. Side mirrors become almost useless due to rain-drops accumulating on mirror itself as well as the window glass in between.

I agree completely, I badly needed rear wiper whenever it rains especially in nights. If it is there, it helps to check traffic in rear before changing lane or making turns.


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