Owners have filed 11 complaints
about the 2003 Mercedes Benz SLK with NHTSA between 2006 and 2011.
The largest single group is the electrical system.
Across this model's run it ranks 3 of 3 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 26
Against the median year of the Mercedes Benz SLK. 50 means typical for this
model; 100 means roughly double.
Severity — 0
0% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 21
13% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2003 compares with every other Mercedes Benz SLK
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2003 Mercedes Benz SLK
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Electrical System
327.3%
Median failure at 70,000 miles
Windows, Mirrors & Wipers
218.2%
Median failure at 90,000 miles
Lights
218.2%
Median failure at 80,000 miles
Equipment & Accessories
19.1%
Stability & Traction Control
19.1%
Median failure at 116,223 miles
Brakes
19.1%
Median failure at 116,223 miles
Steering
19.1%
Median failure at 52,000 miles
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
10,000 – 24,999 miles
112.5%
50,000 – 74,999 miles
337.5%
75,000 – 99,999 miles
225.0%
100,000 – 149,999 miles
225.0%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Nov 2006peak 4Aug 2011
NHTSA investigations into the 2003 Mercedes Benz SLK
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
PE05051Opened 22 Sep 2005Closed 2 Dec 2005EXTERIOR LIGHTING:BRAKE LIGHTS
BRAKE LAMP FAILURE
IN ITS LETTER DATED OCTOBER 28, 2005, MERCEDES-BENZ USA STATED THAT IT WOULD CONDUCT A SAFETY RECALL TO REMEDY DEFECTIVE BRAKE LAMP ASSEMBLIES IN MODEL YEAR 1998 THROUGH 2004 MERCEDES BENZ SLK VEHICLES.THE BASE OF THE BRAKE LAMP SOCKET CAN BE SUBJECT TO THERMAL DEFORMATION OVER TIME.THIS DEFORMATION CAN CAUSE MOVEMENT IN THE SOCKET-TO-BULB CONNECTION, WHICH MAY LEAD TO A LOOSENING OF THE ELECTRICAL CONTACTS IN THE SOCKET, AND FAILURE OF THE BULB TO ILLUMINATE.ALL REAR LAMP MODULES (WHICH CONTAIN BRAKE, TURN SIGNAL, TAIL AND BACKUP LAMPS) WILL BE REPLACED WITH REDESIGNED REAR LAMP MODULES WITH...
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 116,223 milesCenter Moriches, NY
SERVICE BRAKES, HYDRAULIC
I OWN A 2003 MERCEDES SLK 230 , WHICH BRAKES ON IT'S OWN AT ALL DIFFERENT SPEEDS . AFTER THE CAR BRAKES TO THE RIGHT FOR A COUPLE OF SECOND THE BAS/ESP LIGHT COMES ON . I HAVE HAD THIS HAPPEN ON THE HIGHWAY AT 60 MPH (VERY SCARY). I HAVE SINCE HAD THE BRAKE SWITCH CHANGED , AND WHEEL SENSORS AND NEW BATTERY. I HAVE SINCE PICKED MY CAR UP AND NO PROBLEM FOR THE LAST 100 MILES UNTIL TODAY WHEN THE SAME THING OCCURRED AT A LOWER SPEED . CAR IS BACK IN THE SHOP READING NO CODES !!!!!! I HAVE GONE TO THE MERCEDES FORUM AND I FIND THAT THIS PROBLEM IS NOT UNCOMMON . IT SEEMS THAT THE YAW SENSOR AND OR LATERAL CONTROL SENSOR GOES AND CAUSE THE CAR TO THINK IT IS SLIDING AND RANDOMLY BRAKES (ALWAYS TO THE RIGHT) . ALL OF THE COMPLAINTS HAVE HAD THEIR OWNERS IN A PANIC . THIS SEEMS TO BE EXTREMELY DANGEROUS .
NHTSA complaint #10421085 — an unverified report by a vehicle owner.
at 116,223 milesCenter Moriches, NY
ELECTRONIC STABILITY CONTROL (ESC)
I OWN A 2003 MERCEDES SLK 230 , WHICH BRAKES ON IT'S OWN AT ALL DIFFERENT SPEEDS . AFTER THE CAR BRAKES TO THE RIGHT FOR A COUPLE OF SECOND THE BAS/ESP LIGHT COMES ON . I HAVE HAD THIS HAPPEN ON THE HIGHWAY AT 60 MPH (VERY SCARY). I HAVE SINCE HAD THE BRAKE SWITCH CHANGED , AND WHEEL SENSORS AND NEW BATTERY. I HAVE SINCE PICKED MY CAR UP AND NO PROBLEM FOR THE LAST 100 MILES UNTIL TODAY WHEN THE SAME THING OCCURRED AT A LOWER SPEED . CAR IS BACK IN THE SHOP READING NO CODES !!!!!! I HAVE GONE TO THE MERCEDES FORUM AND I FIND THAT THIS PROBLEM IS NOT UNCOMMON . IT SEEMS THAT THE YAW SENSOR AND OR LATERAL CONTROL SENSOR GOES AND CAUSE THE CAR TO THINK IT IS SLIDING AND RANDOMLY BRAKES (ALWAYS TO THE RIGHT) . ALL OF THE COMPLAINTS HAVE HAD THEIR OWNERS IN A PANIC . THIS SEEMS TO BE EXTREMELY DANGEROUS .
NHTSA complaint #10421085 — an unverified report by a vehicle owner.
at 80,000 milesTorrance, CA
EXTERIOR LIGHTING
2003 SLK 230 TAIL LIGHT STILL DEFECTIVE AFTER RECALL REPAIR WAS PERFORMED.
NHTSA complaint #10353794 — an unverified report by a vehicle owner.
at 74,000 milesEdwardsville, IL
ELECTRICAL SYSTEM
TL* THE CONTACT OWNS A 2003 MERCEDES SLK320 ( N/A). WHILE DRIVING AT VARIOUS SPEEDS , THE VEHICLE LOSES POWER WITHOUT ANY WARNING AND AFTER THE VEHICLE LOSES POWER ALL THE LIGHTS ILLUMINATES ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO HIS RESIDENCE.THIS HAS OCCURRED 10 ADDITIONAL TIMES. THE DEALER WAS CONTACTED AND THEY CONCLUDED THAT IT WAS THE K40 CIRCUIT FUSE THAT FAILED. THE FUSE WAS REPLACED AT THE OWNERS EXPENSE. THE FAILURE MILEAGE WAS 74000 AND CURRENT MILEAGE WAS 76000.
NHTSA complaint #10340619 — an unverified report by a vehicle owner.
Fairfield, CA
VISIBILITY:REARVIEW MIRRORS/DEVICES
THE INSIDE REAR VIEW MIRROR IN MY 2003 MERCEDES-BENZ SLK 230 (R170 MODEL) IS AN ELECTRO CHROMIC SELF-DIMMING MIRROR THAT HAS NO MANUAL BACKUP. THE MIRROR CONTAINED A FLUID WHICH LEAKED OUT CAUSING THE SELF-DIMMING MIRROR TO FAIL TO PROVIDE DIMMING AGAINST REAR APPROACHING HEADLIGHTS RESULTING IN THE DRIVER TO EITHER BE BLINDED OR TO HAVE TO TURN THE MIRROR AWAY WHICH GREATLY ELIMINATES REAR VIEW CAPABILITY IN THE INTERIOR. THERE ARE NUMEROUS DOCUMENTED CASES OF THESE MIRRORS FAILING IN VARIOUS MAKES AND MODELS AS A RESULT OF USUALLY FROM THE INTERNAL FLUID LEAKING. I CONTACTED THE OEM MIRROR MAKER, AND THEY REFUSED TO RETURN OUR PHONE CALL/MESSAGES. I RECENTLY READ ON THE MAINTENANCE BLOGS THAT MAGNA DONNELLY WERE REPLACING BUT, STOPPED ALL OF SUDDEN. I HAVE NEVER HAD A VEHICLE THAT HAS EVER EXPERIENCED SUCH A PROBLEM WITH THE REAR VIEW MIRROR.
NHTSA complaint #10340713 — an unverified report by a vehicle owner.
Fairfield, CA
EQUIPMENT
THE INSIDE REAR VIEW MIRROR IN MY 2003 MERCEDES-BENZ SLK 230 (R170 MODEL) IS AN ELECTRO CHROMIC SELF-DIMMING MIRROR THAT HAS NO MANUAL BACKUP. THE MIRROR CONTAINED A FLUID WHICH LEAKED OUT CAUSING THE SELF-DIMMING MIRROR TO FAIL TO PROVIDE DIMMING AGAINST REAR APPROACHING HEADLIGHTS RESULTING IN THE DRIVER TO EITHER BE BLINDED OR TO HAVE TO TURN THE MIRROR AWAY WHICH GREATLY ELIMINATES REAR VIEW CAPABILITY IN THE INTERIOR. THERE ARE NUMEROUS DOCUMENTED CASES OF THESE MIRRORS FAILING IN VARIOUS MAKES AND MODELS AS A RESULT OF USUALLY FROM THE INTERNAL FLUID LEAKING. I CONTACTED THE OEM MIRROR MAKER, AND THEY REFUSED TO RETURN OUR PHONE CALL/MESSAGES. I RECENTLY READ ON THE MAINTENANCE BLOGS THAT MAGNA DONNELLY WERE REPLACING BUT, STOPPED ALL OF SUDDEN. I HAVE NEVER HAD A VEHICLE THAT HAS EVER EXPERIENCED SUCH A PROBLEM WITH THE REAR VIEW MIRROR.
NHTSA complaint #10340713 — an unverified report by a vehicle owner.
at 90,000 milesMission Hills, CA
VISIBILITY
THE INTERIOR REARVIEW MIRROR IN A 2003 MERCEDES BENZ SLK230 (R170) HAD A FLUID LEAK. THE MIRROR IS SUPPOSED TO BE A CHROMATIC AUTO-DIMMING DEVICE. DUE TO THE FLUID LEAK ALL OF THE DARKENING AGENT HAS MIGRATED TO THE CENTER OF THE MIRROR. THE MIRROR NO LONGER AUTO DIMS, IT CREATES MULTIPLE OBJECTS DUE TO GLARE AND INTERNAL REFLECTION. IT IS COMPLETELY UNUSABLE IN IT'S CURRENT CONDITION. THE MANUFACTURER OF THIS MIRROR MAGNA DONNELLEY USED TO OFFER FREE REPLACEMENT OF THESE DEVICES, WHICH HAVE A LONG TRACK RECORD OF FAILING, BUT NOW NO LONGER DO. THE REPLACEMENT COST OF THE DEVICE IS APPROX. $200 WITH A $100 INSTALL CHARGE BY THE DEALER.
NHTSA complaint #10335111 — an unverified report by a vehicle owner.
at 23,000 milesMarshall, MO
ELECTRICAL SYSTEM
MERCEDES WITH 23,000 IGNITION SWITCH WILL NOT TURN. I REPORTED THE ISSUE OF INTERMITTENT PROBLEM TO DEALER AND ATTEMPTED TO HAVE IT RESOLVED WHILE UNDER EXTENDED WARRANTY PERIOD. THE DEALER SAID IT HAD NOT FAILED. WELL, THE WARRANTY IS GONE AND THE FAILING PART FAILED. IT IS EXPENSIVE AND APPEARS TO BE A KNOWN ISSUE BASED ON MY DISCUSSION WITH OTHER OWNERS AND COMPLAINTS HERE.
NHTSA complaint #10325738 — an unverified report by a vehicle owner.
at 70,000 milesFlorence, SC
ELECTRICAL SYSTEM:IGNITION:SWITCH
I INSERTED THE KEY IN THE IGNITION SWITCH AND WAS UNABLE TO TURN THE KEY OR REMOVE THE KEY AND THE CAR WOULD NOT START. I WAS LEFT STRANDED IN A BAD SECTION OF TOWN AND HAD TO WAIT FOR FLAT BED TO TAKE THE CAR TO THE DEALERSHIP. I HAD TO RENT A CAR FOR THREE DAYS WHILE THE DEALERSHIP REPLACED THE ENTIRE IGNITION SWITCH.
NHTSA complaint #10248895 — an unverified report by a vehicle owner.
SAN Jose, CA
EXTERIOR LIGHTING:BRAKE LIGHTS
NHTSA CAMPAIGN NUMBER IS 05V505000. MERCEDES BENZ USA HAS NOT PROVIDED INFORMATION TO CORRECT THE FAILURE AFTER INFORMING ME OF A POTENTIAL SAFETY HAZARD WITH THE TAIL LAMP ASSEMBLY IN SLK MOTOR VEHICLES. SUBSEQUENTLY BOTH MY TAIL LIGHTS ARE NOT FUNCTIONING AND CAUSING SAFETY HAZARD. DEALERSHIPS CONTACTED HAVE NO INFORMATION FROM MBUSA ON HOW TO CORRECT THE DEFECTIVE PARTS AFFECTED IN THE RECALL.
NHTSA complaint #10183295 — an unverified report by a vehicle owner.
at 52,000 milesFlorence, SC
STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID
AT APPROX. 52,000 MILES ON MY CAR, I TOOK IT TO GET SERVICED BY A NON MERCEDES DEALER SHIP, SINCE THE WARRANTY WAS OUT. THEY FOUND THE POWER STEERING LEAKING AND THE RESERVOIR WAS EMPTY. I HAD JUST TAKEN THE CAR IN FOR A SERVICE THREE WEEKS EARLIER FOR WARRANTY WORK, AND THIS PROBLEM WAS NOT FOUND. FLUID WAS LEAKING AROUND THE POWER STEERING PUMP.
NHTSA complaint #10174135 — an unverified report by a vehicle owner.