Mercedes-Benz CLA Fuses

This guide covers fuse box locations and fuse designations for first-generation Mercedes-Benz CLA models, chassis C117, produced from 2013 to 2019.

If you replace any fuses, replace them with the same color fuse. If there is an underlying problem, you could overload the wires or even damage the wiring or circuit if you use a higher-ampere fuse. Ensure the new fuse you are installing has the same color and ampere rating as the old one. If you install a new fuse and it blows again shortly afterward, you could have a short or a problem with that circuit, and you need to get it diagnosed. Secure the vehicle against rolling, switch off all electrical consumers, and switch off the ignition. Remove the SmartKey. On vehicles with KEYLESS-GO, open the driver’s door so the electronics enter key-removed status.

Fuse boxes are located in two places in the CLA.
Engine Compartment Fuse Box

1. One of the fuse boxes is located under the hood. The fuse box is on the left side of the engine compartment when viewed in the direction of travel.
   
2. Open the front passenger door and remove the floor mat. Fold out the perforated floor covering. Press the retaining clamp, fold the fuse box cover outward to the catch, then remove the cover forward. The fuse allocation chart is attached to the lower right side of the cover, in the front passenger footwell. There should be a fuse allocation chart in there as well.  First, remove the floormat on the passenger side to access this panel. Fold back the floor covering toward the back of the car. You should now see a box with a cover. On the right side, you will see a clamp that holds the cover in place. Remove any moisture with a dry cloth before opening the fuse box. When reinstalling the cover, make sure the seal is seated correctly.

You can get a lot of fuses for cheap on Amazon, like these ones here. Make sure to replace the fuses with the correct color and amperage rating. Match the physical fuse type and the printed amperage to the vehicle’s allocation chart. Do not select a replacement by color alone.

 

Fuse Designation Chart

Fuse assignments vary by model year, production date, engine, market, and installed equipment. Confirm the fuse number and amperage on the allocation chart attached to your vehicle’s front passenger footwell fuse box before replacing a fuse.

A/C System / Heater	34,81,102,202
Airbag Systems	38,44,45,46,94,95
Anti Theft Alarm System	85,201
CBC/SAM	25,80,98
Central Console Socket	70
Front Cigarette Lighter and Power Outlet	72
Damper Adjustment	55
Diagnosis	54,87,221,225
Distronic / FCW	224
Driving School	66,91
Electric Parking Brake	73,74,93
Electronic Ignition Lock	83
Emergency Call System	103
ESP	27,204,218,230,237
ETC/ DSRC Card Reader, Japan	64
Exterior Lighting	79,232,236
Fanfare Horn	205
Fuel Pump	63,92
Glove Box Light	65
Hazard Warning Flashers and ECO Controls	84
Heated Rear Window	35
Instrument Cluster	88,106
Lamps, Front Left	229
Lamps, Front Right	231
Engine Electronics	27,28,40,206,207
Engine Electronics	208,211,212,213,214
Engine Electronics	215,216,226,234,235
Multifunction Steering Wheel	32,56
Overhead Control Panel	39,82
PARKTRONIC System	43,50,90,108
Front Power Windows	23,24
Radio Systems	33,37,42,47,49,61
Radio Systems	86,105,107,110
Remote Trunk Opening	78
Rotary Light Switch	89
Front Left Seat	36,60,69,84
Front Right Seat	59,69,84
Load Compartment Socket	71
Starter	26,240A,240B
Steering Lock	62
Taxi	57,58
Telephone System	97
Tilting and Sliding Sunroof	41
Tire Pressure Monitoring	99
Trailer Hitch	29,30,75,76,77
Universal Communication Interface (UCI)	104
Front Windshield Wipers	239
Rear Window Wiper	96

 

Fuse Color and Amperage Rating

Fuse Color	Amperage
Black	1
Beige	5
Brown	7.5
Red	10
Blue	15
Yellow	20
White	25
Green	30
Amber	40
Red	50
Blue	60

 

Model Application: Chassis C117

Years: 2013, 2014, 2015, 2016, 2017, 2018, and 2019

Models: Mercedes-Benz CLA, chassis C117. Confirm the fuse assignment by model year, engine, market, and installed equipment.

 

Fuse Number	Ampere
23	30
24	30
25	30
26	10
27	30
28	5
29	15
30	5
31	5
32	5
33	5
34	7.5
35	40
36	7.5
37	7.5
38	7.5
39	10
40	15
41	30
42	5
43	5
44	40
45	40
46	7.5
47	7.5
48	–
49	7.5
50	5
51	–
52	–
53	–
54	–
55	5
56	10
57	30
58	30
59	30
60	30
61	40
62	20
63	25
64	1
65	5
66	15
67	–
68	–
69	5
70	25
71	25
72	25
73	30
74	30
75	20
76	25
77	25
78	40
79	40
80	40
81	40

 

Fuse Number	Ampere
201	5
202	20
203	15
204	25
205	15
206	5
207	5
208	7.5
209	15
210	5
211	–
212	15
213	15
214	10
215	20
216	5
217	25 for an applicable dual clutch transmission control unit
218	5
219	–
220	–
221	–
222	–
223	–
224	7.5
225	–
226	–
227	–
228	–
229	5
230	5
231	5
232	15
233	–
234	5
235	7.5 Diesel / 15 Gasoline
236	40
237	40
238	50
239	30
240	25
241	–

 

Make sure to replace the old fuse with a new one with the same color and amperage rating.  The amperage rating is the number shown on the fuse.