IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

99' S70 interior light problem, how to troubleshoot?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

850 LPT
Posts: 1139
Joined: Fri May 27, 2011 8:05 am
Year and Model: 96' 850
Location: CT
Has thanked: 44 times
Been thanked: 35 times
United States of America
850 LPT

99' S70 interior light problem, how to troubleshoot?

Post by 850 LPT » Thu Sep 19, 2019 11:18 am

Hello everyone,

Most of the time the interior lights in my S70 don't come on when I open the driver door, or the passenger door for that matter.
This, of course, is happening with the overhead switch in the center position. So because of this I leave them turned off so the battery doesn't drain.

However, the other day I tried it out again while sitting in the car and I turned the switch to the center position, and the lights came on :o . I think in this case they shouldn't though because I didn't open any doors.

Does anybody know what could be wrong?

The PO must have wrestled with this before, because the foot well lights were removed when I got the car.

Thanks for any ideas you might have.

Dirk


96' 850 sedan, base, auto, pewter/charcoal, 111k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 213k miles
04' V70, auto, ash gold/ tan, 225k miles, daughters car
05' V70, 5-speed manual, loaded, mistral green/ tan, 146k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual
58' Porsche Diesel Junior
13' Honda Odyssey :oops:

User avatar
E Showell
Posts: 2800
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
Has thanked: 5 times
Been thanked: 35 times
United States of America
E Showell

Re: 99' S70 interior light problem, how to troubleshoot?

Post by E Showell » Thu Sep 19, 2019 11:22 am

Steve's the resident expert on this.


'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic

850 LPT
Posts: 1139
Joined: Fri May 27, 2011 8:05 am
Year and Model: 96' 850
Location: CT
Has thanked: 44 times
Been thanked: 35 times
United States of America
850 LPT

Re: 99' S70 interior light problem, how to troubleshoot?

Post by 850 LPT » Thu Sep 19, 2019 12:48 pm

Thanks Evan. The repair will be a snap then.


96' 850 sedan, base, auto, pewter/charcoal, 111k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 213k miles
04' V70, auto, ash gold/ tan, 225k miles, daughters car
05' V70, 5-speed manual, loaded, mistral green/ tan, 146k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual
58' Porsche Diesel Junior
13' Honda Odyssey :oops:

User avatar
abscate
MVS Moderator
Posts: 18445
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 212 times
Been thanked: 691 times
Trinidad & Tobago
abscate

Re: 99' S70 interior light problem, how to troubleshoot?

Post by abscate » Thu Sep 19, 2019 1:07 pm

Trade it in for a Honda

There is a long winded thread about troubleshooting my 1999 S70 with this and its a b****

My car is fine as long as the ignition has not been energized in a while , like hours, but the minute T30 gets 12 Volts my lights latch on and stay on regardless of door position.

BY the way.,, when I went to get keys made and coded to the VIN, I could not get it done as I was told one of the lock modules won't go inactive - a requirement for new keys


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
Goupil
Posts: 59
Joined: Mon Feb 04, 2019 12:52 pm
Year and Model: 98' V70 LPT
Location: Brittany
Has thanked: 2 times
Been thanked: 4 times
France
Goupil

Re: 99' S70 interior light problem, how to troubleshoot?

Post by Goupil » Thu Sep 19, 2019 1:16 pm

Couldn't it be just the microswitch in one of the door mechanism getting stuck ? And then somehow got unstuck so the lights stays on while the doors are closed

viewtopic.php?f=1&t=75954


1998 Volvo V70 B5254T manual 193hp - 319 000 km

User avatar
abscate
MVS Moderator
Posts: 18445
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 212 times
Been thanked: 691 times
Trinidad & Tobago
abscate

Re: 99' S70 interior light problem, how to troubleshoot?

Post by abscate » Thu Sep 19, 2019 1:36 pm

Five page thread on this here

viewtopic.php?f=1&t=88623&hilit=1999+S70NA

you may want to look at the electrical diagram on the first page and run away as fast as you can.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
E Showell
Posts: 2800
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
Has thanked: 5 times
Been thanked: 35 times
United States of America
E Showell

Re: 99' S70 interior light problem, how to troubleshoot?

Post by E Showell » Thu Sep 19, 2019 2:39 pm

Steve -- I changed the driver front door on that car, but I believe you have the old door. To the extent a "lock module" is associated with a particular door, harvesting the module from the old driver's door and swapping over may solve your key programming issue.


'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic

850 LPT
Posts: 1139
Joined: Fri May 27, 2011 8:05 am
Year and Model: 96' 850
Location: CT
Has thanked: 44 times
Been thanked: 35 times
United States of America
850 LPT

Re: 99' S70 interior light problem, how to troubleshoot?

Post by 850 LPT » Thu Sep 19, 2019 3:38 pm

You have got to be kidding me.....

I just read through Steve's post, and I feel totally defeated already. Since I'm not nearly as smart as Steve I think I am just going to give up.

And buy a Honda.


96' 850 sedan, base, auto, pewter/charcoal, 111k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 213k miles
04' V70, auto, ash gold/ tan, 225k miles, daughters car
05' V70, 5-speed manual, loaded, mistral green/ tan, 146k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual
58' Porsche Diesel Junior
13' Honda Odyssey :oops:

User avatar
abscate
MVS Moderator
Posts: 18445
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 212 times
Been thanked: 691 times
Trinidad & Tobago
abscate

Re: 99' S70 interior light problem, how to troubleshoot?

Post by abscate » Fri Sep 20, 2019 3:13 am

E Showell wrote:
Thu Sep 19, 2019 2:39 pm
Steve -- I changed the driver front door on that car, but I believe you have the old door. To the extent a "lock module" is associated with a particular door, harvesting the module from the old driver's door and swapping over may solve your key programming issue.
My problem, and I think Dirks , are both logic fail related. I bet he sees the same behavior ido, that electrically cold modules work fine , but something is latching on incorrectly when powered up.

One test for a hyperactive module is if the antenna ring stays illuminated after shut down, that's a telltale.

I think I could get a rocket to the moon with all the parts in this system.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
wizechatmgr
Posts: 1239
Joined: Thu Jan 12, 2017 1:07 pm
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
Has thanked: 20 times
Been thanked: 51 times
Contact:
United States of America
wizechatmgr

Re: 99' S70 interior light problem, how to troubleshoot?

Post by wizechatmgr » Sun Sep 22, 2019 11:22 pm

abscate wrote:
Fri Sep 20, 2019 3:13 am
E Showell wrote:
Thu Sep 19, 2019 2:39 pm
Steve -- I changed the driver front door on that car, but I believe you have the old door. To the extent a "lock module" is associated with a particular door, harvesting the module from the old driver's door and swapping over may solve your key programming issue.
My problem, and I think Dirks , are both logic fail related. I bet he sees the same behavior ido, that electrically cold modules work fine , but something is latching on incorrectly when powered up.

One test for a hyperactive module is if the antenna ring stays illuminated after shut down, that's a telltale.

I think I could get a rocket to the moon with all the parts in this system.
Merely the moon? I think you could likely make it to Mars and back...


Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD - ~177k miles

Post Reply