Question about Mercedes-Benz ML320

2 Answers

I own a 200 model 320 W163. Both heated seats do not work, the lights on the dash come on and after a time switch to the single light, but there is no heat in either seat. I have checked the fuse box under the dash and cannot finds any reference to the heated seats on it, I also did not find any faulty fuses and all relays appeared to work, as I swapped them around and everything else continured to work fine. I also looked under each seat and all the wires appear to be plugged in. Is there a secondary fusebox I have missed? If not can you suggest a diagnistic route I could follow to determine if it is a fuse(s) or relay(s) at fault or the seat heater units. If it is the seat heater units can you explain how they are replaced? Thank you.

Posted by on

  • davie_fisher Sep 02, 2010

    Hello, thanks for the information, but you have only partially answered my question. How do I test to see if the relay is actually faulty, where is the relay located and is it a single relay or one for each seat, as there are two switches.

  • davie_fisher Sep 07, 2010

    Hello, I have checked the relay in the second fuse box (in the footwell) by swapping it out with one I know is working and there is no difference, the seats are still not heating up. The lights on the dash are coming on (which they always did) and I can hear each relay under the seat click as I switch the dashboard switches from on/off and from one light to two. Could these relays be faulty even though they are clicking, and are there any fuses under the seat?

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,896 Answers

Did you check the fusebox on the passenger side kick panel under? There is fuses and relays over there.

Posted on Sep 02, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 10,319 Answers

The seats that are heated run off a relay which is wired to the switch you turn on. No fuses for this option

Posted on Sep 01, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Heated seat not working on 2000 ford expedition eddie bauer


Check continuity on the seat heaters. If that's ok, check the grounds. Check power to the heaters while you are there.

Dec 01, 2013 | Ford Expedition Cars & Trucks

1 Answer

Heated seats on jeep grand cherokee dont work, no dash light


you need new heaters. I've replaced dozens on that model.

Mar 25, 2013 | 1998 Jeep Grand Cherokee

1 Answer

No indicators working found fuse box which fuse?


When you are talking about "indicators" we could assuming that your are refer about signal lights. This work with "flashers" devices.

For 1996 Audi A4 2.8L SFI 6cyl the Flasher is located in front seating area, driver side, under dash, behind dash lower panel, mounted above driver side of steering column.

About generic fuses, open the driver side door. Remove panel on left side of dash. Fuse box is behind panel:

Fuse # / Description / Amps
1 / Heated washer jets / 5
2 / Turn signals flasher unit / 10
3 / Headlight washer, illumination of glove compartment, engine compartment, climate control, automatic transmission, instrument cluster / 5
4 / License plate light / 5
5 / Instrument cluster, seat heating, test connection for cruise control, bulb monitor for auto-check control, Automatic transmission display, switch lighting, mirror switches and actuators, airbag warning light, outside temperature indicator, Climate control / 10
6 / Central locking system / 5
7 / Anti-lock brake system / 10
8 / Vacant
9 / Mirror heating / 10
10 / Vacant
11 / Cruise control (automatic transmission) / 5
12 / On board diagnostic system / 10
13 / Brake lights / 10
14 / Interior lights, reading lights, anti-theft alarm system, vanity mirror / 10
15 / Instrument cluster, power windows, climate control, automatic transmission / 10
16 / Anti-lock brake system, Anti-Slip-Regulation / 5
17 / Heated door locks / 10
18 / High beam right / 10
19 / High beam left / 10
20 / Low beam right / 15
21 / Low beam left / 15
22 / Tail and side marker right / 5
23 / Tail and side marker left / 5
24 / Wiper and washer system / 25
25 / Blower for heating, climate control / 30
26 / Rear window defogger, mirror heating / 30
27 / Rear window wiper / 15
28 / Fuel pump / 15
29 / Engine timing / 20
30 / Sun roof / 20
31 / Tail lights, cruise control, automatic transmission / 15
32 / Engine timing / 20
33 / Cigarette lighter / 15
34 / Engine timing / 15
35 / Trailer receptacle / 30
36 / Fog lights / 15
37 / Radio / 20
38 / Luggage compartment light, central locking system / 15
39 / Emergency flasher / 15
40 / Horn / 25
41 / Anti-lock brake system / 25
42 / Vacant
43 / Vacant
44 / Seat heating / 30

Hope this helps (remember to rate and comme this free answeer).



Jun 16, 2011 | 1996 Audi A4

1 Answer

2005 Honda Pilot passenger heated seat does not work. Fuses are ok.


If fuse #3 20amp in the passanger under-dash box is good.
Check and see if the orange light for the high and low setting come on when you switch between high and low.
if light doesn't come on, the switch itself might be bad.
if light turn on for both setting then, it's a high chance it's the heat pads located under the seat cover need to be replace.

Dec 14, 2010 | 2005 Honda Pilot

2 Answers

On my audi the speedometer doesnt work and the dash light doesnt


Speedometer problem: This is well-documented on V8 and 200 models..Check here for info:
http://millerfactor.blogspot.com/2008/05/1991-audi-200-turbo-quattro-and.html

Dash lights: check the dimmer control knob first, then the bulbs..If not those, then it could be related to the problem above...

Driver's seat warmer; could be broken wires leading to the warmers inside the seat from, or the elements are simply burned out.

Blue smoke is oil related, not head gasket (which would be white)..Most V8's will exhibit a little blue smoke from time-to-time, but if it is excessive then it may be time for vailve seals or piston rings..depends on the mileage.

Aug 08, 2009 | 1990 Audi V8 Quattro

1 Answer

Drivers heated seat not working


check the fuse for the dash for the seats.

Jul 21, 2009 | 1998 Jeep Grand Cherokee

1 Answer

Heated leather seats will not heat up. Switch lights up and all fuses are okay. Is there a hiddedn relay I am not finding? Is there a quick way to determine if the problem is in the heating element under...


are you saying neither the heated seat cushion nor heated seated back on either seat works? But the light or lights does work?

Please rate as solved if this helps you. It took some time to dig all this stuff up. Please report progress.

Here's some info to start you off:

  • The heated seat is inoperative — seat does not heat but the heated seat switch illuminates when pressed
  • Circuitry.
  • Heated seat module.
  • Seat heater and temperature sensor.
  • Seat back heater.
  • Heated seat switch.


17ca9e8.gif
1d57fc6.gif

May 28, 2009 | 1999 Ford Expedition

1 Answer

Seat belt indicator


look under the drivers seat there is a plug that may be unplugged or broken this is what tells the light to stay on plug it in or try unplugging it and see what happens, on some of the 200 and up models the seat belt light may have some affect on airbags working properly, I have not found this to be the case on 97 model.

Aug 22, 2008 | 2002 Jeep Wrangler

2 Answers

Fuse box


Wiring relays and connections – all modelsRelays (typical)

1 Vacant
2 Intake manifold preheating relay (carburettor models) or fuel
pump relay (injection models)
3 Seat belt warning system relay
4 Gearshift indicator control unit
5 Air conditioner relay
6 Dual tone horn relay
7 Relay for foglights and rear foglight
8 Relief relay for X contact
10 Intermittent wash/wipe relay
11 Rear window wiper relay
12 Turn signal flasher or trailer towing warning relay
13 Seat belt warning system (interlock) or rear window, driving
lights and oil pressure warning relay
14 Window lift or seat belt warning system relay
15 Headlight washer relay
16 Control unit for idling speed increase
17 Fuse for rear foglight
18 Control unit for coolant shortage indicator
19 Thermo fuse for window lifters
20 Switch unit for heated driver’s seat
21 Switch unit for heated passenger’s seat
22 Switch unit for overrun cut-off
23 Vacant
24 Vacant
Relays are symbolised as a number in a black box
Not all relays are fitted to all models
Connections
A Multi-pin connector (blue) for dash panel loom
B Multi-pin connector (red) for dash panel loom
C Multi-pin connector (yellow) for engine compartment loom left
D Multi-pin connector (white) for engine compartment loom right
E Multi-pin connector (black) for rear wiring loom
G Single connector
H Multi-pin connector (brown) for air conditioner or wiring loom
K Multi-pin connector (transparent) for seat belt warning system
loom
L Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (carburettor models) or
multi-pin connector (grey) for dual tone horn (injection models)
M Multi-pin connector (black) for lighting switch terminal 56 and
dip and flasher switch terminal 56b (injection models)
N Single connector for separate fuse (manifold heater element)
P Single connector (terminal 30)
R Not in use
Fuse colours
Blue 5A
Green 30A
Red 10A
Yellow 20A

Jul 17, 2008 | 1987 Volkswagen Jetta

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

154 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

yadayada
yadayada

Level 3 Expert

75797 Answers

Michael Contreras
Michael Contreras

Level 2 Expert

166 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...