# 1986 190e mb Why does my headlights turn on my wiper

**URL:** <https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444>\
**Category:** Maintenance/Repairs\
**Created:** [February 10, 2008, 12:45am UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444 "2008-02-10T00:45:17Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![johnfwurm](https://avatars.discourse-cdn.com/v4/letter/j/439d5e/32.png) [@johnfwurm](https://community.cartalk.com/u/johnfwurm)\
**Post date:** [February 10, 2008, 12:45am UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/1 "2008-02-10T00:45:17Z")

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I have a weird thing that just started happening with my 1986 Mercedes 190e, when I turn the headlights on my wiper automatically turns on. If I don’t turn on the headlights the wiper and all its functions work normally. What is causing this ?

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**Author:** ![Troubleshooter](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/troubleshooter/32/36_2.png) [@Troubleshooter](https://community.cartalk.com/u/Troubleshooter)\
**Post date:** [February 10, 2008, 4:17am UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/2 "2008-02-10T04:17:43Z")

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Are the wipers also turning on the dash lights?

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [February 10, 2008, 4:58am UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/3 "2008-02-10T04:58:17Z")

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There may be a a grounding problem with the headlights causing this.

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [February 10, 2008, 11:35am UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/4 "2008-02-10T11:35:30Z")

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Did that model have auto wipers? You know the ones that sensed rain and turned them on for you. I seem to remember that was about the time that silly thing came out. It may be failing.

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**Author:** ![johnfwurm](https://avatars.discourse-cdn.com/v4/letter/j/439d5e/32.png) [@johnfwurm](https://community.cartalk.com/u/johnfwurm)\
**Post date:** [February 10, 2008, 8:33pm UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/5 "2008-02-10T20:33:16Z")

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No just the wiper. I have noticed that my passenger side headlight seems dimmer when this happens

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**Author:** ![johnfwurm](https://avatars.discourse-cdn.com/v4/letter/j/439d5e/32.png) [@johnfwurm](https://community.cartalk.com/u/johnfwurm)\
**Post date:** [February 10, 2008, 8:36pm UTC](https://community.cartalk.com/t/1986-190e-mb-why-does-my-headlights-turn-on-my-wiper/10444/6 "2008-02-10T20:36:41Z")

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I think it is a ground issue but I don’t know where to start to fix it. any ideas ?